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A High Resolution α-enhanced stellar Library for Evolutionary Population Synthesis

Published online by Cambridge University Press:  01 December 2006

Lucimara Martins  and
Paula Coelho
Lucimara Martins
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas–USP Rua do Matão 1226, São Paulo-SP, cep. 05508-900, Brazil email: lucimara@astro.iag.usp.br
Paula Coelho
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas–USP Rua do Matão 1226, São Paulo-SP, cep. 05508-900, Brazil email: lucimara@astro.iag.usp.br Max Planck Institute for AstrophysicsKarl-Schwarzschild-Str. 1 D-85741 Garching, Germany email: pcoelho@mpa-garching.mpg.de
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Abstract

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One of the main ingredients of current stellar population models is a library of stellar spectra. Both empirical and theoretical libraries are used for this purpose, and the question about which one to use is still being debated in the literature. Empirical and theoretical libraries are improving significantly over the years, and many libraries have become available lately. It is not clear what are the advantages of using each of these new libraries, and how far behind are models compared to observations. Here we compare in detail some of the modern theoretical libraries availabe in the literature against empirical libraries attempting to detect their weaknesses and strengths. The aim is to be able to compute in the short future a new synthetic stellar library that combines the best qualities of the current available ones, while improving considerably their weaknesses.

Keywords

stellar librarystellar spectra
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 58 - 62
Copyright
Copyright © International Astronomical Union 2007

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