<p>There are several online sources of spectra (eg SDSS), but they usually just provide a FITS file with data, or a plot vs wavelength without any annotation. Of course, you could use the  <a href="https://www.nist.gov/pml/atomic-spectra-database" rel="nofollow noreferrer">NIST atomic spectra database</a> to identify lines, but that quickly becomes tedious.</p>

<p>There are many figures containing spectra for various classes of stars in the book by Gray and Corbally, <strong>Stellar Spectral Classification</strong>. Many of these figures were previously available on Gray's web site, but the links no longer work. I scanned one that may be of use, <a href="https://photos.smugmug.com/Photography/Miscellaneous/i-HP6R5tb/0/77e58ecc/O/Fig7.1GtoK.png" rel="nofollow noreferrer">Figure 7.1</a> containing spectra of G through K stars. In particular, one of these spectra is for a reference standard G0V star, <span class="math-container">$\beta$</span> CVn, with the stronger Ca, Fe and H-Balmer lines identified.</p>

<p>Another good resource for annotated spectra of many star classes is Richard Walker's, <strong>Spectroscopic Atlas for Amateur Astronomers</strong>. I have the printed version, but pdf files of <a href="https://www.unitronitalia.com/prodotti/spectroscopic-atlas-3_0-english.pdf" rel="nofollow noreferrer">older versions</a> are available online. This atlas contains spectra of a G0IV star, and the Sun, G2V, that have similar absorption lines.</p>

<p>There are also collections of standard spectra, such as the Miles library. These are often included in software used for processing spectra, along with tables of common lines for various elements that can be shown on the plot. Programs I have used for amateur spectroscopy that display these include Rspec (commercial), Vspec and ISIS (Christian Buil).</p>

CC BY-SA 4.0
2019-07-03T01:26:59.887Z
2019-07-03T01:26:59.887Z
amateurAstro
<p>Where might I find a detailed table or figure containing the absorption lines and their corresponding wavelengths for each type of main sequence star? </p>

<p>I'm trying to get the chemical abundance of some elements on a G0V spectrum but I don't know which lines I'm looking at.</p>

<spectroscopy><spectra><spectral-type>
Examples of absorption lines for main sequence stars
bajotupie
# Examples of absorption lines for main sequence stars

(Asked by: username_0 on 2019-07-01)

Where might I find a detailed table or figure containing the absorption lines and their corresponding wavelengths for each type of main sequence star?

I'm trying to get the chemical abundance of some elements on a G0V spectrum but I don't know which lines I'm looking at.

**Tags:** spectroscopy, spectra, spectral-type


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## 1 answers

### Answer by username_1 on 2019-07-03. Score: 1 | Accepted answer

There are several online sources of spectra (eg SDSS), but they usually just provide a FITS file with data, or a plot vs wavelength without any annotation. Of course, you could use the [NIST atomic spectra database](https://www.nist.gov/pml/atomic-spectra-database) to identify lines, but that quickly becomes tedious.

There are many figures containing spectra for various classes of stars in the book by Gray and Corbally, **Stellar Spectral Classification**. Many of these figures were previously available on Gray's web site, but the links no longer work. I scanned one that may be of use, [Figure 7.1](https://photos.smugmug.com/Photography/Miscellaneous/i-HP6R5tb/0/77e58ecc/O/Fig7.1GtoK.png) containing spectra of G through K stars. In particular, one of these spectra is for a reference standard G0V star, $\beta$ CVn, with the stronger Ca, Fe and H-Balmer lines identified.

Another good resource for annotated spectra of many star classes is Richard Walker's, **Spectroscopic Atlas for Amateur Astronomers**. I have the printed version, but pdf files of [older versions](https://www.unitronitalia.com/prodotti/spectroscopic-atlas-3_0-english.pdf) are available online. This atlas contains spectra of a G0IV star, and the Sun, G2V, that have similar absorption lines.

There are also collections of standard spectra, such as the Miles library. These are often included in software used for processing spectra, along with tables of common lines for various elements that can be shown on the plot. Programs I have used for amateur spectroscopy that display these include Rspec (commercial), Vspec and ISIS (Christian Buil).


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