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Google Keyword Rankings for : why do lines appear in a stars spectrum
1
Spectral Line | COSMOS
https://astronomy.swin.edu.au/cosmos/s/Spectral+Line
A spectral line is like a fingerprint that can be used to identify the atoms, elements or molecules present in a star, galaxy or cloud of interstellar gas.
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https://astronomy.swin.edu.au/cosmos/s/Spectral+Line
A spectral line is like a fingerprint that can be used to identify the atoms, elements or molecules present in a star, galaxy or cloud of interstellar gas.
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2
Absorption/emission lines - Khan Academy
https://www.khanacademy.org/science/class-11-chemistry-india/xfbb6cb8fc2bd00c8:in-in-structure-of-atom/xfbb6cb8fc2bd00c8:in-in-bohr-s-model-of-hydrogen-atom/a/absorptionemission-lines
These lines came to be known as 'spectral lines' and were cataloged by heating common elements until they produced light and measuring the wavelengths emitted.
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https://www.khanacademy.org/science/class-11-chemistry-india/xfbb6cb8fc2bd00c8:in-in-structure-of-atom/xfbb6cb8fc2bd00c8:in-in-bohr-s-model-of-hydrogen-atom/a/absorptionemission-lines
These lines came to be known as 'spectral lines' and were cataloged by heating common elements until they produced light and measuring the wavelengths emitted.
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3
Line Spectra - SFA Physics
http://www.physics.sfasu.edu/markworth/notes/line_spectranotes.htm
To our instruments of limited resolution, it appears that the line is broadened. For stars the mechanism to rise or lower the pressure is gravity. Gravity ...
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http://www.physics.sfasu.edu/markworth/notes/line_spectranotes.htm
To our instruments of limited resolution, it appears that the line is broadened. For stars the mechanism to rise or lower the pressure is gravity. Gravity ...
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4
Spectra and What They Can Tell Us
https://imagine.gsfc.nasa.gov/science/toolbox/spectra1.html
The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving. We can learn about ...
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https://imagine.gsfc.nasa.gov/science/toolbox/spectra1.html
The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving. We can learn about ...
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5
What does a star's dark line spectrum reveal? - Quora
https://www.quora.com/What-does-a-stars-dark-line-spectrum-reveal
The dark line's in a star's spectrum indicate what energy levels are being absorbed by the elements of that star — and thus, what elements the star is made ...
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https://www.quora.com/What-does-a-stars-dark-line-spectrum-reveal
The dark line's in a star's spectrum indicate what energy levels are being absorbed by the elements of that star — and thus, what elements the star is made ...
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6
Spectral line - Wikipedia
https://en.wikipedia.org/wiki/Spectral_line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow ...
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https://en.wikipedia.org/wiki/Spectral_line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow ...
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7
Types of Stars and HR diagram - Astronomy Notes
https://www.astronomynotes.com/starprop/s12.htm
It uses the strength of different absorption lines in a star's spectrum. Once astronomers developed this method, they began to look for ...
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https://www.astronomynotes.com/starprop/s12.htm
It uses the strength of different absorption lines in a star's spectrum. Once astronomers developed this method, they began to look for ...
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8
Absorption & Emission Spectra - NMSU Astronomy
http://astronomy.nmsu.edu/geas/lectures/lecture19/slide02.html
Absorption spectrum: What do stellar spectra look like (the light observed from stars)? Stars have absorption line spectra. We can think of stars as a hot ...
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http://astronomy.nmsu.edu/geas/lectures/lecture19/slide02.html
Absorption spectrum: What do stellar spectra look like (the light observed from stars)? Stars have absorption line spectra. We can think of stars as a hot ...
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9
Interpreting Stellar Spectra
http://spiff.rit.edu/classes/phys230/lectures/spec_interp/spec_interp.html
But, it turns out, light from the star encodes a wealth of information about the physical state of its outer atmosphere. Light is produced in the inner regions ...
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http://spiff.rit.edu/classes/phys230/lectures/spec_interp/spec_interp.html
But, it turns out, light from the star encodes a wealth of information about the physical state of its outer atmosphere. Light is produced in the inner regions ...
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10
Spectral Types of Stars - Eclipsing Binary Stars - NAAP
https://astro.unl.edu/naap/ebs/spectraltype.html
If light from a continuous spectrum passes through a cool, transparent gas we observe dark lines appear in the spectrum. The lines occur where atoms of the gas ...
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https://astro.unl.edu/naap/ebs/spectraltype.html
If light from a continuous spectrum passes through a cool, transparent gas we observe dark lines appear in the spectrum. The lines occur where atoms of the gas ...
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11
Stellar spectra - star - Encyclopedia Britannica
https://www.britannica.com/science/star-astronomy/Stellar-spectra
Inspection of a high-resolution spectrum of the star may reveal evidence of a strong magnetic field. Spectral lines are produced by transitions of electrons ...
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https://www.britannica.com/science/star-astronomy/Stellar-spectra
Inspection of a high-resolution spectrum of the star may reveal evidence of a strong magnetic field. Spectral lines are produced by transitions of electrons ...
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12
Lecture 14: Stellar Spectra, HR Diagram, Masses
http://ircamera.as.arizona.edu/astr_250/Lectures/Lecture_14.htm
The dominant factor in the appearance of a star's spectrum is its temperature, not its composition (this fact I is telling us two things: 1) that most stars ...
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http://ircamera.as.arizona.edu/astr_250/Lectures/Lecture_14.htm
The dominant factor in the appearance of a star's spectrum is its temperature, not its composition (this fact I is telling us two things: 1) that most stars ...
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13
Spectroscopy 101 – Beyond Temperature and Composition
https://webbtelescope.org/contents/articles/spectroscopy-101--beyond-temperature-and-composition
When a star is moving toward us, the opposite occurs. All of the light looks compressed and the lines appear at shorter wavelengths, shifted ...
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https://webbtelescope.org/contents/articles/spectroscopy-101--beyond-temperature-and-composition
When a star is moving toward us, the opposite occurs. All of the light looks compressed and the lines appear at shorter wavelengths, shifted ...
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14
Spectra - JIM KALER
http://stars.astro.illinois.edu/sow/spectra.html
The absorption lines in the Sun and stars can be identified with individual chemical elements or molecular compounds by comparing their positions in the ...
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http://stars.astro.illinois.edu/sow/spectra.html
The absorption lines in the Sun and stars can be identified with individual chemical elements or molecular compounds by comparing their positions in the ...
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15
Colors, Temperatures, and Spectral Types of Stars
https://www.e-education.psu.edu/astro801/book/export/html/1755
Recall from Lesson 3 that the spectrum of a star is not a true blackbody spectrum because of the presence of absorption lines. The absorption lines visible ...
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https://www.e-education.psu.edu/astro801/book/export/html/1755
Recall from Lesson 3 that the spectrum of a star is not a true blackbody spectrum because of the presence of absorption lines. The absorption lines visible ...
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16
Types of Astronomical Spectra
https://www.atnf.csiro.au/outreach/education/senior/astrophysics/spectra_astro_types.html
Absorption spectrum: Most stars are surrounded by outer layers of gas that are less dense than the core. The photons emitted from the core cover all frequencies ...
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https://www.atnf.csiro.au/outreach/education/senior/astrophysics/spectra_astro_types.html
Absorption spectrum: Most stars are surrounded by outer layers of gas that are less dense than the core. The photons emitted from the core cover all frequencies ...
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17
Why are there dark lines in an absorption line spectrum from ...
https://physics.stackexchange.com/questions/427284/why-are-there-dark-lines-in-an-absorption-line-spectrum-from-the-sun
When a photon is absorbed, it does not reach your eyes anymore, so for that specific wavelength the image gets darker. In the spectrum this wavelength ...
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https://physics.stackexchange.com/questions/427284/why-are-there-dark-lines-in-an-absorption-line-spectrum-from-the-sun
When a photon is absorbed, it does not reach your eyes anymore, so for that specific wavelength the image gets darker. In the spectrum this wavelength ...
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18
Absorption and Emission Lines
https://www.gb.nrao.edu/GBTopsdocs/primer/absorption_and_emission_lin.htm
The same phenomena are at work in the non-visible portions of the spectrum, including the radio range. As the radiation passes through a gas, certain ...
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https://www.gb.nrao.edu/GBTopsdocs/primer/absorption_and_emission_lin.htm
The same phenomena are at work in the non-visible portions of the spectrum, including the radio range. As the radiation passes through a gas, certain ...
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19
Stellar Spectroscopy - what can we learn about stars - YouTube
https://www.youtube.com/watch?v=oM5lEG2woA0
Apr 15, 2019
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https://www.youtube.com/watch?v=oM5lEG2woA0
Apr 15, 2019
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20
The Behaviour of Chemical Elements in Stars - C. Jaschek ...
https://ned.ipac.caltech.edu/level5/Glossary/Jaschek/Fe.html
Fe is an element whose lines dominate the spectra of all stars of type F and ... FeI lines (for instance 4045, 5216 and 5269) appear in late B-type stars ...
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https://ned.ipac.caltech.edu/level5/Glossary/Jaschek/Fe.html
Fe is an element whose lines dominate the spectra of all stars of type F and ... FeI lines (for instance 4045, 5216 and 5269) appear in late B-type stars ...
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21
The Spectral Types of Stars - Sky & Telescope
https://skyandtelescope.org/astronomy-resources/the-spectral-types-of-stars/
Whether in a star's atmosphere or in a laboratory, absorption lines are produced when a continuous rainbow of light from a hot, dense object (top left) passes ...
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https://skyandtelescope.org/astronomy-resources/the-spectral-types-of-stars/
Whether in a star's atmosphere or in a laboratory, absorption lines are produced when a continuous rainbow of light from a hot, dense object (top left) passes ...
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22
Spectral Lines
https://www2.nau.edu/~gaud/bio301/content/spec.htm
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow ...
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https://www2.nau.edu/~gaud/bio301/content/spec.htm
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow ...
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23
Online Exercise: Classification of Stellar Spectra
http://astro.wku.edu/astr106/stellarclass/classifyspectra.html
The hotter the star is, the more highly ionized the gas in its outer layers The degree of ionization governs the pattern of spectral lines that will form. For ...
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http://astro.wku.edu/astr106/stellarclass/classifyspectra.html
The hotter the star is, the more highly ionized the gas in its outer layers The degree of ionization governs the pattern of spectral lines that will form. For ...
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24
Types of Stars and the HR diagram
http://www2.phy.ilstu.edu/~bkc/astronomy/starprop/strpropd.htm
It uses the strength of different absorption lines in a star's spectrum. Once astronomers developed this method, they began to look for ...
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http://www2.phy.ilstu.edu/~bkc/astronomy/starprop/strpropd.htm
It uses the strength of different absorption lines in a star's spectrum. Once astronomers developed this method, they began to look for ...
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25
What is a star's "spectrum"? (Beginner) - Ask an Astronomer
http://curious.astro.cornell.edu/about-us/78-the-universe/stars-and-star-clusters/general-questions/393-what-is-a-star-s-spectrum-beginner
Also, the spectra that we see coming from stars often contain what look like dark lines at particular colors, which means there is much less ...
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http://curious.astro.cornell.edu/about-us/78-the-universe/stars-and-star-clusters/general-questions/393-what-is-a-star-s-spectrum-beginner
Also, the spectra that we see coming from stars often contain what look like dark lines at particular colors, which means there is much less ...
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26
Stellar Spectra - CASS/UCSD
https://casswww.ucsd.edu/archive/public/tutorial/Stars.html
Although the photons may be re-emitted, they are effectively removed from the beam of light, resulting in a dark or absorption feature. The ...
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https://casswww.ucsd.edu/archive/public/tutorial/Stars.html
Although the photons may be re-emitted, they are effectively removed from the beam of light, resulting in a dark or absorption feature. The ...
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27
Stellar Spectra - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/physics-and-astronomy/stellar-spectra
Their spectra are characterized by strong lines from carbon-bearing molecules (CN, C2). These stars form when nucleosynthetically processed material, which is ...
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https://www.sciencedirect.com/topics/physics-and-astronomy/stellar-spectra
Their spectra are characterized by strong lines from carbon-bearing molecules (CN, C2). These stars form when nucleosynthetically processed material, which is ...
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28
Why is it that spectral lines emitted from stars in distant ...
https://www.mytutor.co.uk/answers/13752/GCSE/Physics/Why-is-it-that-spectral-lines-emitted-from-stars-in-distant-galaxies-appear-to-be-shifted-towards-the-red-end-of-the-electromagnetic-spectrum/
Spectral lines are caused by electrons within atoms being excited up energies levels by absorbing specific frequencies of light (this produces absorption ...
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https://www.mytutor.co.uk/answers/13752/GCSE/Physics/Why-is-it-that-spectral-lines-emitted-from-stars-in-distant-galaxies-appear-to-be-shifted-towards-the-red-end-of-the-electromagnetic-spectrum/
Spectral lines are caused by electrons within atoms being excited up energies levels by absorbing specific frequencies of light (this produces absorption ...
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29
AST 101: Spectral Classifications
http://www.astro.sunysb.edu/fwalter/AST101/spt.html
Because to first approximation, stars are black bodies, and the hotter stars are blue and the cooler stars are red (the visble surface of a star is called the ...
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http://www.astro.sunysb.edu/fwalter/AST101/spt.html
Because to first approximation, stars are black bodies, and the hotter stars are blue and the cooler stars are red (the visble surface of a star is called the ...
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30
5.5 Formation of Spectral Lines – Astronomy - UCF Pressbooks
https://pressbooks.online.ucf.edu/astronomybc/chapter/5-5-formation-of-spectral-lines/
When electrons move from a higher energy level to a lower one, photons are emitted, and an emission line can be seen in the spectrum. Absorption lines are seen ...
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https://pressbooks.online.ucf.edu/astronomybc/chapter/5-5-formation-of-spectral-lines/
When electrons move from a higher energy level to a lower one, photons are emitted, and an emission line can be seen in the spectrum. Absorption lines are seen ...
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31
What Are Fraunhofer Lines? | Importance, Sun, Colors & Light
https://nineplanets.org/questions/what-are-fraunhofer-lines/
The Fraunhofer lines are any of the dark absorption lines in the spectrum of stars (like the Sun), which is caused by selective absorption of a star's ...
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https://nineplanets.org/questions/what-are-fraunhofer-lines/
The Fraunhofer lines are any of the dark absorption lines in the spectrum of stars (like the Sun), which is caused by selective absorption of a star's ...
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32
Be Stars
https://www.mpifr-bonn.mpg.de/311278/carla_morton.pdf
spectrum of a star, the black lines are absorption lines. . The visible light from a star can be decomposed in a bundle of colors from red to violet.
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https://www.mpifr-bonn.mpg.de/311278/carla_morton.pdf
spectrum of a star, the black lines are absorption lines. . The visible light from a star can be decomposed in a bundle of colors from red to violet.
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33
The Spectral Sequence and Temperature - Study.com
https://study.com/academy/lesson/the-spectral-sequence-stellar-astronomy.html
Another lesson describes for you how star spectra are formed. An absorption line spectrum refers to dark spectral lines interspersed on a ...
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https://study.com/academy/lesson/the-spectral-sequence-stellar-astronomy.html
Another lesson describes for you how star spectra are formed. An absorption line spectrum refers to dark spectral lines interspersed on a ...
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34
What Does Spectral Line Mean? What Are Emission And ...
https://continuousspectrum.com/what-does-spectral-line-mean/
With other words a spectral line is like a fingerprint. It can be used to identify the atoms, elements or molecules present in a star, galaxy or cloud of ...
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https://continuousspectrum.com/what-does-spectral-line-mean/
With other words a spectral line is like a fingerprint. It can be used to identify the atoms, elements or molecules present in a star, galaxy or cloud of ...
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35
The Atomic Spectrum | Science at Your Doorstep
https://scienceatyourdoorstep.com/2017/10/21/the-atomic-spectrum/
A continuous spectrum is produced when any object emits light. Simple as that. In astronomy, that object is usually going to be a star. Here's ...
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https://scienceatyourdoorstep.com/2017/10/21/the-atomic-spectrum/
A continuous spectrum is produced when any object emits light. Simple as that. In astronomy, that object is usually going to be a star. Here's ...
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36
Guide to Spectroscopy and Spectral Lines - Astrobites
https://astrobites.org/guides/spectroscopy-and-spectral-lines/
When acquiring a spectrum of an astronomical object, astronomers rely upon spectral lines to determine a myriad of physical properties, such as composition, ...
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https://astrobites.org/guides/spectroscopy-and-spectral-lines/
When acquiring a spectrum of an astronomical object, astronomers rely upon spectral lines to determine a myriad of physical properties, such as composition, ...
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37
Module 7 The Nature of Light: Spectra of Stars – HSC Physics
https://scienceready.com.au/pages/spectra-of-stars
What is a Stellar Spectrum? ... Stars emit radiation which includes visible light (400-700 nm). For example, the Sun emits white light that can be captured and ...
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https://scienceready.com.au/pages/spectra-of-stars
What is a Stellar Spectrum? ... Stars emit radiation which includes visible light (400-700 nm). For example, the Sun emits white light that can be captured and ...
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38
Spectroscopy: Reading the Rainbow - Hubble Space Telescope
https://hubblesite.org/contents/articles/spectroscopy-reading-the-rainbow
An emission spectrum is made by electrons falling down the energy ladder. It's what you get when you look at hot gas, which is heated by ...
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https://hubblesite.org/contents/articles/spectroscopy-reading-the-rainbow
An emission spectrum is made by electrons falling down the energy ladder. It's what you get when you look at hot gas, which is heated by ...
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39
Absorption lines in the spectrum of sunlight | IOPSpark
https://spark.iop.org/absorption-lines-spectrum-sunlight
The dark lines are called Fraunhofer lines. These are very important in astrophysics as they reveal the composition of the outer layers of stars. Slight shifts ...
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https://spark.iop.org/absorption-lines-spectrum-sunlight
The dark lines are called Fraunhofer lines. These are very important in astrophysics as they reveal the composition of the outer layers of stars. Slight shifts ...
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40
OpenStax Astronomy, Ch.17: WS Solutions (Apr-2021)
https://circuit.bcit.ca/repository/islandora/object/repository%3A1054/datastream/PDF/view
The primary reason that stellar spectra look different is that the stars have different ... star as a dwarf or giant: Measure the width of spectral lines.
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https://circuit.bcit.ca/repository/islandora/object/repository%3A1054/datastream/PDF/view
The primary reason that stellar spectra look different is that the stars have different ... star as a dwarf or giant: Measure the width of spectral lines.
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41
Star Spectral Classification - Hyperphysics
http://hyperphysics.phy-astr.gsu.edu/hbase/Starlog/staspe.html
The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak.
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http://hyperphysics.phy-astr.gsu.edu/hbase/Starlog/staspe.html
The spectra of O-Type stars shows the presence of hydrogen and helium. At these temperatures most of the hydrogen is ionized, so the hydrogen lines are weak.
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42
17.3 The Spectra of Stars (and Brown Dwarfs) - Astronomy 2e
https://openstax.org/books/astronomy-2e/pages/17-3-the-spectra-of-stars-and-brown-dwarfs
Figure 5.11 Visible Spectrum of the Sun. Our star's spectrum is crossed by dark lines produced by atoms in the solar atmosphere that absorb ...
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https://openstax.org/books/astronomy-2e/pages/17-3-the-spectra-of-stars-and-brown-dwarfs
Figure 5.11 Visible Spectrum of the Sun. Our star's spectrum is crossed by dark lines produced by atoms in the solar atmosphere that absorb ...
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43
Identifying Elements in the Sun Using Spectral Lines
http://www.columbia.edu/~vjd1/Solar%20Spectrum%20Ex.html
Today's astronomers use some of the designations simply for convenience and ease in identifying lines. Now we know that each absorption line is caused by a ...
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http://www.columbia.edu/~vjd1/Solar%20Spectrum%20Ex.html
Today's astronomers use some of the designations simply for convenience and ease in identifying lines. Now we know that each absorption line is caused by a ...
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44
Spectral Classification - Eso.org
http://www.eso.org/~cguirao/caos/spectralclassification/SpectralClassification.html
These are hot stars, with surface temperatures greater than 10,000 K. As a ... The strength of the hydrogen lines decreases as collisional excitation in ...
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http://www.eso.org/~cguirao/caos/spectralclassification/SpectralClassification.html
These are hot stars, with surface temperatures greater than 10,000 K. As a ... The strength of the hydrogen lines decreases as collisional excitation in ...
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45
Overview of Stellar Spectra - Quarknet |
https://quarknet.fnal.gov/fnal-uc/quarknet-summer-research/QNET2010/Astronomy/
In the spectra of stars, we frequently do not know the distances to the stars, so a star's spectrum shows how bright it appears from Earth.
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https://quarknet.fnal.gov/fnal-uc/quarknet-summer-research/QNET2010/Astronomy/
In the spectra of stars, we frequently do not know the distances to the stars, so a star's spectrum shows how bright it appears from Earth.
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46
Spectra in the Lab - IfA
https://home.ifa.hawaii.edu/users/barnes/ASTR110L_F05/spectralab.html
Some stars, as they age, produce continuous spectra with dark absorption lines and bright emission lines; this is usually a sign that the star ...
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https://home.ifa.hawaii.edu/users/barnes/ASTR110L_F05/spectralab.html
Some stars, as they age, produce continuous spectra with dark absorption lines and bright emission lines; this is usually a sign that the star ...
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47
Space Science-Absorption spectroscopy
http://www.dynamicscience.com.au/tester/solutions1/space%20science/absorptionspectroscopy.htm
A shift in the red direction, as shown below, known as redshift, indicates that the star is moving away from us at a velocity that is proportional to the amount ...
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http://www.dynamicscience.com.au/tester/solutions1/space%20science/absorptionspectroscopy.htm
A shift in the red direction, as shown below, known as redshift, indicates that the star is moving away from us at a velocity that is proportional to the amount ...
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48
6.3: Line Spectra and the Bohr Model - Chemistry LibreTexts
https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Chemistry_-_The_Central_Science_(Brown_et_al.)/06%3A_Electronic_Structure_of_Atoms/6.03%3A_Line_Spectra_and_the_Bohr_Model
Although objects at high temperature emit a continuous spectrum of electromagnetic radiation, a different kind of spectrum is observed when pure ...
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https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Chemistry_-_The_Central_Science_(Brown_et_al.)/06%3A_Electronic_Structure_of_Atoms/6.03%3A_Line_Spectra_and_the_Bohr_Model
Although objects at high temperature emit a continuous spectrum of electromagnetic radiation, a different kind of spectrum is observed when pure ...
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49
Continuous Spectrum Absorption Line Spectrum Emission ...
http://www.physics.umanitoba.ca/astro/wp-content/uploads/2014/07/SpectralClassificationP1810.pdf
Some good examples of stellar spectra are shown in the Sky & Telescope ... star is composed of its continuum emission as well as a number of 'lines' which.
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http://www.physics.umanitoba.ca/astro/wp-content/uploads/2014/07/SpectralClassificationP1810.pdf
Some good examples of stellar spectra are shown in the Sky & Telescope ... star is composed of its continuum emission as well as a number of 'lines' which.
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50
Explainer: seeing the universe through spectroscopic eyes
https://theconversation.com/explainer-seeing-the-universe-through-spectroscopic-eyes-37759
In the top spectrum you can see a few strong spikes. These are called “emission lines” and occur at discrete wavelengths due to the atomic ...
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https://theconversation.com/explainer-seeing-the-universe-through-spectroscopic-eyes-37759
In the top spectrum you can see a few strong spikes. These are called “emission lines” and occur at discrete wavelengths due to the atomic ...
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51
The Spectra of Stars (and Brown Dwarfs) - Course Hero
https://www.coursehero.com/study-guides/astronomy/the-spectra-of-stars-and-brown-dwarfs/
The hydrogen lines in the visible part of the spectrum (called Balmer lines) are strongest in stars with intermediate temperatures—not too hot and not too ...
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https://www.coursehero.com/study-guides/astronomy/the-spectra-of-stars-and-brown-dwarfs/
The hydrogen lines in the visible part of the spectrum (called Balmer lines) are strongest in stars with intermediate temperatures—not too hot and not too ...
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52
Stellar Types
http://abyss.uoregon.edu/~js/ast122/lectures/lec09.html
Why do some stars have strong lines of hydrogen, others strong lines of calcium? The answer was not composition (all stars are 95% hydrogen) but rather surface ...
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http://abyss.uoregon.edu/~js/ast122/lectures/lec09.html
Why do some stars have strong lines of hydrogen, others strong lines of calcium? The answer was not composition (all stars are 95% hydrogen) but rather surface ...
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53
How do astronomers use light to study stars and planets? - ABC
https://www.abc.net.au/science/articles/2010/10/07/3012690.htm
When you look at the spectrum of a star, for example, you can see absorption lines because the star's outer atmosphere is cooler than the ...
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https://www.abc.net.au/science/articles/2010/10/07/3012690.htm
When you look at the spectrum of a star, for example, you can see absorption lines because the star's outer atmosphere is cooler than the ...
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54
Homework 4: Light (ch5) Flashcards | Chegg.com
https://www.chegg.com/flashcards/homework-4-light-ch5-8d0d3cf8-ff3c-4f00-ac3d-dfc6b166fe7d/deck
The absorption line spectrum shows what we see when we look at a hot light source (such as a star or light bulb) directly behind a cooler cloud of gas. Suppose ...
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https://www.chegg.com/flashcards/homework-4-light-ch5-8d0d3cf8-ff3c-4f00-ac3d-dfc6b166fe7d/deck
The absorption line spectrum shows what we see when we look at a hot light source (such as a star or light bulb) directly behind a cooler cloud of gas. Suppose ...
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55
How do scientists determine the compositions of planets and ...
https://astronomy.com/magazine/ask-astro/2019/06/how-do-scientists-determine-the-chemical-compositions-of-the-planets-and-stars
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its ...
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https://astronomy.com/magazine/ask-astro/2019/06/how-do-scientists-determine-the-chemical-compositions-of-the-planets-and-stars
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its ...
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56
stellar surface temperatures
https://www.ucolick.org/~bolte/AY4_00/week4/star_temp.html
A long time ago, astronomers recognized that different stars had dramatically different absorption lines in their spectra. Some had strong absorption lines due ...
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https://www.ucolick.org/~bolte/AY4_00/week4/star_temp.html
A long time ago, astronomers recognized that different stars had dramatically different absorption lines in their spectra. Some had strong absorption lines due ...
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57
2.5 Spectroscopy
https://wps.prenhall.com/wps/media/objects/610/625137/Chaisson/CH.00.002/HTML/CH.00.002.s5.htm
However, closer scrutiny shows that the solar spectrum is interrupted by a large number of narrow dark lines, as shown in Figure 2.14. These lines represent ...
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https://wps.prenhall.com/wps/media/objects/610/625137/Chaisson/CH.00.002/HTML/CH.00.002.s5.htm
However, closer scrutiny shows that the solar spectrum is interrupted by a large number of narrow dark lines, as shown in Figure 2.14. These lines represent ...
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58
Bright Sodium Lines in a Stellar Spectrum - NASA/ADS
https://adsabs.harvard.edu/full/1933ApJ....77...51M
Numerous enhanced metallic lines, most of them in emission, are visible. ... encountered when emission-line stars of early type are examined in detail.
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https://adsabs.harvard.edu/full/1933ApJ....77...51M
Numerous enhanced metallic lines, most of them in emission, are visible. ... encountered when emission-line stars of early type are examined in detail.
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59
How do astronomers know the universe is expanding? - Curious
https://www.science.org.au/curious/space-time/how-do-astronomers-know-universe-expanding
One thing they examine is the change in position of lines in the spectrum from a star—this can tell astronomers how far away the star is, ...
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https://www.science.org.au/curious/space-time/how-do-astronomers-know-universe-expanding
One thing they examine is the change in position of lines in the spectrum from a star—this can tell astronomers how far away the star is, ...
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60
Spectrum reveals what star and planets are made of
https://www.sctimes.com/story/sports/outdoors/2016/02/26/spectrum-reveals-what-star-and-planets-made/80528282/
These dark lines tell us what is the star's composition. Fraunhofer did experiments with elements on the Earth and found that each element had a ...
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https://www.sctimes.com/story/sports/outdoors/2016/02/26/spectrum-reveals-what-star-and-planets-made/80528282/
These dark lines tell us what is the star's composition. Fraunhofer did experiments with elements on the Earth and found that each element had a ...
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61
ASTRO-1 CH.5 HW Flashcards - Quizlet
https://quizlet.com/428757257/astro-1-ch5-hw-flash-cards/
The top spectrum always shows the lines as they appear in a spectrum created in a laboratory on Earth ("Lab") and the bottom spectrum shows the same set of ...
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https://quizlet.com/428757257/astro-1-ch5-hw-flash-cards/
The top spectrum always shows the lines as they appear in a spectrum created in a laboratory on Earth ("Lab") and the bottom spectrum shows the same set of ...
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62
Rotation Demonstration - John Hillier's
http://kookaburra.phyast.pitt.edu/hillier/web/rotation.htm
When a star is rotating, the spectrum of the star is also affected by Doppler Broadening. When we are looking equator-on, half of the rotating star is moving ...
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http://kookaburra.phyast.pitt.edu/hillier/web/rotation.htm
When a star is rotating, the spectrum of the star is also affected by Doppler Broadening. When we are looking equator-on, half of the rotating star is moving ...
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63
What is stellar spectroscopy and what does it tell us about stars?
https://wonderdome.co.uk/stellar-spectroscopy-explained/
Spectroscopy to the rescue! It turns out that all the absorption lines in a moving star's spectrum will appear shifted [compared to the spectrum from a non- ...
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https://wonderdome.co.uk/stellar-spectroscopy-explained/
Spectroscopy to the rescue! It turns out that all the absorption lines in a moving star's spectrum will appear shifted [compared to the spectrum from a non- ...
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64
Astronomy Lecture Number 5 - NJIT
https://web.njit.edu/~gary/202/Lecture5.html
Light in Everyday Life · Spectral lines are seen when light is passed through a slit, then expanded into a spectrum. · Absorption lines are dark lines due to " ...
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https://web.njit.edu/~gary/202/Lecture5.html
Light in Everyday Life · Spectral lines are seen when light is passed through a slit, then expanded into a spectrum. · Absorption lines are dark lines due to " ...
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65
Spectroscopy
https://snews.bnl.gov/popsci/spectroscope.html
A second way to notice the Doppler shift is the following: spectral lines, remember, cross the frequency band at definite places, depending upon the star's ...
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https://snews.bnl.gov/popsci/spectroscope.html
A second way to notice the Doppler shift is the following: spectral lines, remember, cross the frequency band at definite places, depending upon the star's ...
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66
12.3 Emission and absorption spectra (ESCQR) - Siyavula
https://www.siyavula.com/read/science/grade-12/optical-phenomena-and-properties-of-matter/12-optical-phenomena-and-properties-of-matter-03
Since each element emits or absorbs light only at particular wavelengths, astronomers can identify what elements are in the stars from the lines in their ...
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https://www.siyavula.com/read/science/grade-12/optical-phenomena-and-properties-of-matter/12-optical-phenomena-and-properties-of-matter-03
Since each element emits or absorbs light only at particular wavelengths, astronomers can identify what elements are in the stars from the lines in their ...
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67
Splitting starlight: the science of spectroscopy
https://www.skyatnightmagazine.com/space-science/splitting-starlight-science-spectroscopy/
Objects such as stars create what are known as continuum spectra. If we think about just the visible-light portion of the electromagnetic ...
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https://www.skyatnightmagazine.com/space-science/splitting-starlight-science-spectroscopy/
Objects such as stars create what are known as continuum spectra. If we think about just the visible-light portion of the electromagnetic ...
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68
Every color of the Sun's rainbow: Why are there so many ...
https://www.extremetech.com/extreme/167878-every-color-of-the-suns-rainbow-why-are-there-so-many-missing
The black lines in the Sun's spectrum are caused by gases on, or above, the Sun's surface that absorb some of the emitted light. Every gas (such ...
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https://www.extremetech.com/extreme/167878-every-color-of-the-suns-rainbow-why-are-there-so-many-missing
The black lines in the Sun's spectrum are caused by gases on, or above, the Sun's surface that absorb some of the emitted light. Every gas (such ...
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69
Copy of Gizmos Star Spectra SE - Google Docs - StuDocu
https://www.studocu.com/en-us/document/sellers-middle-school/ap-government/copy-of-gizmos-star-spectra-se-google-docs/19090831
What happens when light goes through a prism? When the light goes through a prism, it is bent or refracted. Violet, Indigo, Blue, Green, Yellow, ...
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https://www.studocu.com/en-us/document/sellers-middle-school/ap-government/copy-of-gizmos-star-spectra-se-google-docs/19090831
What happens when light goes through a prism? When the light goes through a prism, it is bent or refracted. Violet, Indigo, Blue, Green, Yellow, ...
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70
5.3 Spectroscopy in Astronomy - BCcampus Pressbooks
https://pressbooks.bccampus.ca/astronomy1105/chapter/5-3-spectroscopy-in-astronomy/
In contrast, absorption spectra occur when passing white light through a cool, thin gas. The temperature and other conditions determine whether the lines are ...
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https://pressbooks.bccampus.ca/astronomy1105/chapter/5-3-spectroscopy-in-astronomy/
In contrast, absorption spectra occur when passing white light through a cool, thin gas. The temperature and other conditions determine whether the lines are ...
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71
Fingerprinting the Stars Lab Key.docx
https://www.lcps.org/cms/lib4/VA01000195/Centricity/Domain/10740/Fingerprinting%20the%20Stars%20Lab%20Key.docx
Background: Every element produces a unique fingerprint of spectral lines. ... spectrum- light emitted by anything that is very hot and dense (stars).
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https://www.lcps.org/cms/lib4/VA01000195/Centricity/Domain/10740/Fingerprinting%20the%20Stars%20Lab%20Key.docx
Background: Every element produces a unique fingerprint of spectral lines. ... spectrum- light emitted by anything that is very hot and dense (stars).
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72
Stellar Spectrum | Starlight - Space FM
https://www.space.fm/astronomy/starsgalaxies/stellarspectrum.html
We can tell what atoms are present in the star by different coloured lines in the spectrum. These are called spectral lines. Some lines are dark and called ...
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https://www.space.fm/astronomy/starsgalaxies/stellarspectrum.html
We can tell what atoms are present in the star by different coloured lines in the spectrum. These are called spectral lines. Some lines are dark and called ...
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73
Lesson Worksheet:Emission and Absorption Spectra - Nagwa
https://www.nagwa.com/en/worksheets/658148208480/
The spectrum he sees is shown in the figure. He compares the emission lines within the spectrum to the emission lines in the spectra of pure elements, which are ...
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https://www.nagwa.com/en/worksheets/658148208480/
The spectrum he sees is shown in the figure. He compares the emission lines within the spectrum to the emission lines in the spectra of pure elements, which are ...
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74
Lecture 12: The Classification of Stars
https://sites.ualberta.ca/~pogosyan/teaching/ASTRO_122/lect12/lecture12.html
Different types of stars show different absorption line strengths. ... Strength of a spectral lines is non-monotonic with temperature !
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https://sites.ualberta.ca/~pogosyan/teaching/ASTRO_122/lect12/lecture12.html
Different types of stars show different absorption line strengths. ... Strength of a spectral lines is non-monotonic with temperature !
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75
The classification of stellar spectra
https://www.astro.princeton.edu/~burrows/classes/204/stellar.atmospheres.HR.pdf
What do stellar spectra look like? ... Physics of spectral lines: excitation ... Stars show various patterns of absorption lines:.
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https://www.astro.princeton.edu/~burrows/classes/204/stellar.atmospheres.HR.pdf
What do stellar spectra look like? ... Physics of spectral lines: excitation ... Stars show various patterns of absorption lines:.
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76
Introduction to Physical Astronomy - Spectra
http://kias.dyndns.org/astrophys/spectra.html
Emission spectra are the bright lines generated by electron transitions. Absorption spectra are dark lines in the continuous spectrum caused when an atom or ...
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http://kias.dyndns.org/astrophys/spectra.html
Emission spectra are the bright lines generated by electron transitions. Absorption spectra are dark lines in the continuous spectrum caused when an atom or ...
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77
spectral classification of stars - Handprint
https://www.handprint.com/ASTRO/specclass.html
Why did stars differ in color and spectral features? Some astronomers adopted the hypothesis proposed by Hermann von Helmholtz (1863) and James Homer Lane ...
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https://www.handprint.com/ASTRO/specclass.html
Why did stars differ in color and spectral features? Some astronomers adopted the hypothesis proposed by Hermann von Helmholtz (1863) and James Homer Lane ...
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78
typesspectra
https://www.sas.upenn.edu/~storaska/typesspectra.html
Stars, nebulae, and planets in space produce a continuous spectra because of the heat energy they radiate. The dark lines in the spectra produced from the ...
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https://www.sas.upenn.edu/~storaska/typesspectra.html
Stars, nebulae, and planets in space produce a continuous spectra because of the heat energy they radiate. The dark lines in the spectra produced from the ...
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79
Types of Stars - Las Cumbres Observatory
https://lco.global/spacebook/stars/types-stars/
They wanted to develop a detailed spectral classification system based on the absorption lines they were seeing. They adapted an existing spectral class system ...
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https://lco.global/spacebook/stars/types-stars/
They wanted to develop a detailed spectral classification system based on the absorption lines they were seeing. They adapted an existing spectral class system ...
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80
PECULIAR EMISSION LINES IN THE SPECTRUM ... - JSTOR
https://www.jstor.org/stable/40678496
During a series of spectral scans in search of flares on the dMe star YZ CMi we observed ... most prominent lines appearing in all the spectra are, in.
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https://www.jstor.org/stable/40678496
During a series of spectral scans in search of flares on the dMe star YZ CMi we observed ... most prominent lines appearing in all the spectra are, in.
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81
Lecture 24: Matter & Light
https://www.astronomy.ohio-state.edu/pogge.1/Ast161/Unit4/spectra.html
Key Ideas: · A hot, dense object produces a continuous spectrum(blackbody spectrum). · A hot, low-density gas produces an emission-line spectrum.
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https://www.astronomy.ohio-state.edu/pogge.1/Ast161/Unit4/spectra.html
Key Ideas: · A hot, dense object produces a continuous spectrum(blackbody spectrum). · A hot, low-density gas produces an emission-line spectrum.
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82
Chapter 4, Section 1
https://lifeng.lamost.org/courses/astrotoday/CHAISSON/AT304/HTML/AT30401.HTM
When the light source is viewed through a cloud of cool hydrogen gas, a series of dark absorption lines appear, superimposed on the spectrum at wavelengths ...
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https://lifeng.lamost.org/courses/astrotoday/CHAISSON/AT304/HTML/AT30401.HTM
When the light source is viewed through a cloud of cool hydrogen gas, a series of dark absorption lines appear, superimposed on the spectrum at wavelengths ...
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83
Lecture 2: Formation of a Stellar Spectrum
https://www.astro.rug.nl/~etolstoy/chile/etolstoy2.pdf
If the opacity varies slowly with λ it determines the stars continuous spectrum (or continuum). The dark absorption lines superimposed on the spectrum are the.
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https://www.astro.rug.nl/~etolstoy/chile/etolstoy2.pdf
If the opacity varies slowly with λ it determines the stars continuous spectrum (or continuum). The dark absorption lines superimposed on the spectrum are the.
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84
Spectral lines - Byju's
https://byjus.com/chemistry/spectral-line/
A spectral line is a spectrum in which light of only a certain wavelength is emitted or absorbed, rather than a continuous range of wavelengths, rather than a ...
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https://byjus.com/chemistry/spectral-line/
A spectral line is a spectrum in which light of only a certain wavelength is emitted or absorbed, rather than a continuous range of wavelengths, rather than a ...
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85
absorption spectrum - The Worlds of David Darling
https://www.daviddarling.info/encyclopedia/A/absorption_spectrum.html
The pattern of absorption lines in a spectrum is diagnostic of the types of atoms and molecules present, for example, in the surface layers of a star or the ...
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https://www.daviddarling.info/encyclopedia/A/absorption_spectrum.html
The pattern of absorption lines in a spectrum is diagnostic of the types of atoms and molecules present, for example, in the surface layers of a star or the ...
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86
Spectroscopy Observing Section - AAVSO
https://www.aavso.org/spectroscopy-observing-section
Therefore, by comparing the wavelength of a line in a stellar spectrum to its known value, we can determine its radial velocity relative to us. If an object is ...
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https://www.aavso.org/spectroscopy-observing-section
Therefore, by comparing the wavelength of a line in a stellar spectrum to its known value, we can determine its radial velocity relative to us. If an object is ...
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87
spectra_exploration - Exploratorium
http://www.exo.net/~pauld/summer_institute/summer_day9spectra/spectra_exploration.html
The solar spectrum is a continuous spectrum of an incandescent gas. Look closely and you will see fine dark lines crossing the solar spectrum. These fine lines ...
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http://www.exo.net/~pauld/summer_institute/summer_day9spectra/spectra_exploration.html
The solar spectrum is a continuous spectrum of an incandescent gas. Look closely and you will see fine dark lines crossing the solar spectrum. These fine lines ...
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88
Vspec - Spectral analysis - Astrosurf
http://astrosurf.com/vdesnoux/spectrum.html
If a specific line show up in a spectrum this first means that a transition has occured i.e. an energy exchange has taken place by outputing a photon which ...
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http://astrosurf.com/vdesnoux/spectrum.html
If a specific line show up in a spectrum this first means that a transition has occured i.e. an energy exchange has taken place by outputing a photon which ...
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89
NIST: Atomic Spectra Database Lines Form
https://physics.nist.gov/PhysRefData/ASD/lines_form.html
NIST Atomic Spectra Database Lines Form. Best viewed with the latest versions of Web browsers and JavaScript enabled. Main Parameters, Spectrum
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https://physics.nist.gov/PhysRefData/ASD/lines_form.html
NIST Atomic Spectra Database Lines Form. Best viewed with the latest versions of Web browsers and JavaScript enabled. Main Parameters, Spectrum
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90
The Universe - HMXEarthScience
https://hmxearthscience.com/Warehouse/Regents%20Questions/The%20Universe%20KEY.pdf
bright-line spectrum for an element. The spectrum of the same element observed in the light from a distant star is shown below. A) toward Earth.
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https://hmxearthscience.com/Warehouse/Regents%20Questions/The%20Universe%20KEY.pdf
bright-line spectrum for an element. The spectrum of the same element observed in the light from a distant star is shown below. A) toward Earth.
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91
Carbon stars in the X-Shooter Spectral Library
https://www.aanda.org/articles/aa/full_html/2016/05/aa26292-15/aa26292-15.html
Figure 3 shows some of the spectra of the carbon stars over a small part of the visible wavelength range (0.07 μm wide). The red spectrum is a telluric ...
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https://www.aanda.org/articles/aa/full_html/2016/05/aa26292-15/aa26292-15.html
Figure 3 shows some of the spectra of the carbon stars over a small part of the visible wavelength range (0.07 μm wide). The red spectrum is a telluric ...
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92
The Doppler Effect | Astronomy - Lumen Learning
https://courses.lumenlearning.com/suny-astronomy/chapter/the-doppler-effect/
If a star approaches or recedes from us, the wavelengths of light in its continuous spectrum appear shortened or lengthened, respectively, as do those of the ...
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https://courses.lumenlearning.com/suny-astronomy/chapter/the-doppler-effect/
If a star approaches or recedes from us, the wavelengths of light in its continuous spectrum appear shortened or lengthened, respectively, as do those of the ...
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93
Stellar Spectra
https://web.phys.cmu.edu/~tiziana/stars/stars11.pdf
The core of a star emits blackbody radiation. Most stars are surrounded by outer layers of gas ... Hydrogen lines in the visible part of the spectrum.
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https://web.phys.cmu.edu/~tiziana/stars/stars11.pdf
The core of a star emits blackbody radiation. Most stars are surrounded by outer layers of gas ... Hydrogen lines in the visible part of the spectrum.
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94
Emission | Multiwavelength Astronomy - eCUIP
https://ecuip.lib.uchicago.edu/multiwavelength-astronomy/optical/science/06.html
When a hot star illuminates nearby hydrogen atoms, starlight is absorbed by the hydrogen. The result is to produce a glowing gas with a spectrum of pure red, ...
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https://ecuip.lib.uchicago.edu/multiwavelength-astronomy/optical/science/06.html
When a hot star illuminates nearby hydrogen atoms, starlight is absorbed by the hydrogen. The result is to produce a glowing gas with a spectrum of pure red, ...
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