The UV Side of BOSS Galaxies
Abstract
We exploit stellar population models of absorption line indices in the ultraviolet to assess their power in determining physical properties of the stellar populations of galaxies. We use a system of 8 indices between 2200-3200 A, tracing several chemical elements including Mg and Fe. We apply these models to a large sample of z ∼ 0.6 massive galaxies from the SDSS-III/BOSS survey using both individual spectra and stacks. We find qualitative agreement between stellar ages derived from UV absorption indices and those from full broadband Spectral Energy Distribution (SED) fitting. We also find evidence for old stars contributing to the UV, rather than new star formation.
- Publication:
-
Massive Young Star Clusters Near and Far: From the Milky Way to Reionization
- Pub Date:
- September 2014
- Bibcode:
- 2014mysc.conf..191L