Résumé / Abstract Seminaire_IAP
« Stellar population synthesis at the present epoch »

Gustavo Bruzual
Centro Investigaciones Astron. (CIDA) (Mérida, Venezuela)

The use of high signal-to-noise ratio stellar spectral libraries of intermediate and high spectral resolution in population synthesis models is now possible. Several 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, have become available in the last few years: the Hubble's New Generation Spectral Library (HNGSL; 200 stars), the Medium resolution INT Library of Empirical Spectra (MILES; 1000 stars), the UVES Paranal Observatory Project (UVES POP Library; 400 stars), or the Indo-US library (1200 stars).
I show the results of using the HNGSL and the Indo-US libraries to build stellar 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. Applications of these models to study galaxy populations will be discussed.
vendredi 15 septembre 2006 - 11:00
Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris
Page web du séminaire / Seminar's webpage