Synthesis of stellar MG and Fe absorption indices for stellar population studies

Details Synthesis of stellar MG and Fe absorption indices for stellar population studies Synthesis of stellar MG and Fe absorption indices for stellar population studies

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413..166g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 1, p. 166-175.

Astronomy and Astrophysics

Astrophysics

16

Metallicity, Star Distribution, Stellar Atmospheres, Stellar Composition, Stellar Spectra, Iron, Magnesium

Scientific paper

A library of synthetic stellar fluxes, based on a recent grid of model atmospheres (Kurucz, 1992), has been computed in the wavelength range 4850-5400 A. A set of spectral indices has been derived in the effective temperature range 4000-6000 K, with a step of 250 K, surface gravity from 1.5 to 4.5 at an interval of 0.50 dex, and metallicity from -0.50 to 1.00, with the step of 0.50 dex. The spectral indices refer to Fe and Mg features, namely Fe 5270 and Fe 5335, Mg(b), Mg(1), and Mg(2). Here we present the grids of these synthetic spectral indices and their dependence on the main atmospheric stellar parameters, namely effective temperature, surface gravity, and metallicity.

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