Abstract
In order to investigate the origin of the far-UV (FUV) flux from early-type galaxies, Galaxy Evolution Explorer (GALEX) is collecting the UV data for the elliptical-rich clusters at moderate redshifts (z < 0.25) where the dominant FUV source is predicted to be hot horizontal-branch (HB) stars and their post-HB progeny. The early results show that the FUV flux of quiescent early-type galaxies does evolve substantially during the last 1-2 Gyr of look-back time, and the observed UV fading is consistent with the variation predicted by the population synthesis models where the mean temperature of HB stars declines rapidly with increasing look-back time.
| Original language | English |
|---|---|
| Pages (from-to) | 5-12 |
| Number of pages | 8 |
| Journal | Baltic Astronomy |
| Volume | 15 |
| Issue number | 1 |
| Publication status | Published - 2006 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science