Color Evolution from z=0 to z=1
| dc.creator | Rakos, Karl | |
| dc.creator | Schombert, James | |
| dc.date | 1996-03-13 | |
| dc.date.accessioned | 2026-07-07T02:21:00Z | |
| dc.date.available | 2026-07-07T02:21:00Z | |
| dc.description | Rest frame Stromgren photometry (3500A, 4100A, 4750A and 5500A) is presented for 509 galaxies in 17 rich clusters between z=0 and z=1 as a test of color evolution. Our observations confirm a strong, rest frame, Butcher-Oemler effect where the fraction of blue galaxies increases from 20% at z=0.4 to 80% at z=0.9. We also find that a majority of these blue cluster galaxies are composed of normal disk or post-starbursts systems based on color criteria. When comparing our colors to the morphological results from HST imaging, we propose that the blue cluster galaxies are a population of late-type, LSB objects who fade and are then destroyed by the cluster tidal field. After isolating the red objects from Butcher-Oemler objects, we have compared the mean color of these old, non-star forming objects with SED models in the literature as a test for passive galaxy evolution in ellipticals. We find good agreement with single burst models which predict a mean epoch of galaxy formation at z=5. Tracing the red envelope for ellipticals places the earliest epoch of galaxy formation at z=10. | |
| dc.description | 25 pages, AAS LaTex, paper was published in ApJ last year, but is being posted here to satisify numerous requests for the figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9603058 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9603058 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10401 | |
| dc.subject | Astrophysics | |
| dc.title | Color Evolution from z=0 to z=1 | |
| dc.type | text |