Stellar Populations: High Spectral Resolution Libraries. Improved TP-AGB Treatment

Details Stellar Populations: High Spectral Resolution Libraries. Improved TP-AGB Treatment Stellar Populations: High Spectral Resolution Libraries. Improved TP-AGB Treatment

2007-02-03

arxiv.org/abs/astro-ph/0702091v1

Astronomy and Astrophysics

Astrophysics

8 pages, 5 figures, in Proceedings of the Meeting "From Stars to Galaxies: Building the Pieces to Build Up the Universe", eds.

Scientific paper

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.

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