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Title:
A library of high resolution synthetic stellar spectra from 300 nm to 1.8 μm with solar and α-enhanced composition
Authors:
Coelho, P.; Barbuy, B.; Meléndez, J.; Schiavon, R. P.; Castilho, B. V.
Affiliation:
AA(Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-900, Brazil ; Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching, Germany ), AB(Universidade de São Paulo, Rua do Matão 1226, São Paulo 05508-900, Brazil ), AC(Department of Astronomy, Caltech, 1200 E. California Blvd, Pasadena, CA 91125, USA ), AD(Department of Astronomy, University of Virginia, PO Box 3818, Charlottesville, VA 22903-0818, USA ), AE(Laboratório Nacional de Astrofísica / MCT, CP 21, 37500-000 Itajubá, Brazil )
Publication:
Astronomy and Astrophysics, Volume 443, Issue 2, November IV 2005, pp.735-746 (A&A Homepage)
Publication Date:
11/2005
Origin:
EDP Sciences
Keywords:
stars: atmospheres
DOI:
10.1051/0004-6361:20053511
Bibliographic Code:
2005A&A...443..735C

Abstract

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 μm). 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 α-enhanced ([ α/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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