Studying stellar populations at high spectral resolution

Details Studying stellar populations at high spectral resolution Studying stellar populations at high spectral resolution

2007-01-31

arxiv.org/abs/astro-ph/0701907v1

Astronomy and Astrophysics

Astrophysics

32 pages, 24 figures, in Proceedings of the Meeting "Resolved Stellar Populations", Cancun, Mexico, 18-22 April 2005, eds. D.

Scientific paper

I describe very briefly the new libraries of empirical spectra of stars covering wide ranges of values of the atmospheric parameters Teff, log g, [Fe/H], as well as spectral type, that have become available in the recent past, among them the HNGSL, MILES, UVES-POP, ELODIE, and the IndoUS libraries. I show the results of using the IndoUS and the HNGSL libraries, as well as an atlas of theoretical model atmospheres, to build population synthesis models. These libraries are complementary in spectral resolution and wavelength coverage, and will prove extremely useful to describe spectral features expected in galaxy spectra from the NUV to the NIR. The fits to observed galaxy spectra using simple and composite stellar population models are discussed.

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