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Stellar Population Models with Variable Element Abundance Ratios

Published online by Cambridge University Press:  30 March 2016

Daniel Thomas ,
Claudia Maraston  and
Ralf Bender
Daniel Thomas
Affiliation:
MPE, Giessenbachstraβe, 85748 Garching, GermanyUniversitäts-Sternwarte, Scheinerstraβe 1, 81679 München, Germany
Claudia Maraston
Affiliation:
MPE, Giessenbachstraβe, 85748 Garching, GermanyUniversitäts-Sternwarte, Scheinerstraβe 1, 81679 München, Germany
Ralf Bender
Affiliation:
MPE, Giessenbachstraβe, 85748 Garching, GermanyUniversitäts-Sternwarte, Scheinerstraβe 1, 81679 München, Germany

Abstract

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We present a comprehensive set of new generation stellar population models of Lick absorption line indices, which for the first time include element abundance ratios different from solar. We computed the 21 Lick indices CN1, CN2, Ca4227, G4300, Fe4383, Ca4455, Fe4531, C24668, Hβ, Fe5015, Mg1, Mg2, Mgb, Fe5270, Fe5335, Fe5406, Fe5709, Fe5782, Na D, TiO1, and TiO2, in the wavelength range 4000 ≲ λ ≲ 6500 Å. Models are provided with: [α/Fe] = 0.0, 0.3, 0.5, [α/Ca] = -0.1, 0.0, 0.2, 0.5, and [α/N] = −0.5, 0.0; ages from 1 to 15 Gyr; total metallicities from 1/200 to 3.5 solar (-2.25 ≤ [Z/H] ≤ 0.67).

Type
JD6: Extragalactic Globular Clusters & Their Host Galaxies
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 189 - 190
Copyright
Copyright © Cambridge University Press 1988

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