A library of high resolution synthetic stellar spectra from 300 nm to 1.8 μm with solar and α-enhanced composition

Libraries of stellar spectra are fundamental tools for the study of stellar populations, and both empirical and synthetic libraries have been used for this purpose. In this paper, a new library of high resolution synthetic spectra is presented, ranging from the near-ultraviolet (300 nm) to the near-...

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Published inAstronomy and astrophysics (Berlin) Vol. 443; no. 2; pp. 735 - 746
Main Authors COELHO, P, BARBUY, B, MELENDEZ, J, SCHIAVON, R. P, CASTILHO, B. V
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences 01.11.2005
Subjects
Stellar spectra
stars: atmospheres
Metallicity
Stellar population
Physical parameter
Luminosity
Spectral type
Chemical composition
Age
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Summary:Libraries of stellar spectra are fundamental tools for the study of stellar populations, and both empirical and synthetic libraries have been used for this purpose. In this paper, a new library of high resolution synthetic spectra is presented, ranging from the near-ultraviolet (300 nm) to the near-infrared (1.8 mu m). The library spans all the stellar types that are relevant to the integrated light of old and intermediate-age stellar populations in the involved spectral region (spectral types F through M and all luminosity classes). The grid was computed for metallicities ranging from [Fe/H] = -2.5 to +0.5, including both solar and alpha -enhanced ([ alpha /Fe] = 0.4) chemical compositions. The synthetic spectra are a good match to observations of stars throughout the stellar parameter space encompassed by the library and over the whole spectral region covered by the computations.
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content type line 23
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361:20053511