I present a short description of the STELIB, HNGSL, IndoUS, MILES, ELODIE, UVES-POP, and IRTF libraries of empirical stellar spectra and show some applications of their use in population synthesis models. When new calculations of the TP-AGB evolutionary phase for stars of different mass and metallicity are included in population synthesis models, the stellar mass in galaxies at z from 1 to 3 determined from spectro-photometric data can be up to 50% lower than the mass determined from the BC03 models. The ages inferred for these populations are considerably lower than the BC03 estimates.
@article{arxiv.astro-ph/0702091,
title = {Stellar Populations: High Spectral Resolution Libraries. Improved TP-AGB Treatment},
author = {Gustavo Bruzual A},
journal= {arXiv preprint arXiv:astro-ph/0702091},
year = {2007}
}
Comments
8 pages, 5 figures, in Proceedings of the Meeting "From Stars to Galaxies: Building the Pieces to Build Up the Universe", eds. A. Vallenari, R. Tantalo, L. Portinari, and A. Moretti, ASP Conf. Ser. (in press)