Color evolution from Z = 0 to Z = 1

Details Color evolution from Z = 0 to Z = 1 Color evolution from Z = 0 to Z = 1

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...439...47r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 439, no. 1, p. 47-59

Mathematics

Logic

138

Astronomical Photometry, Color, Galactic Clusters, Galactic Evolution, Red Shift, Data Correlation, Image Analysis, Spectrum Analysis

Scientific paper

Rest frame Stroemgren photometry (3500 A, 4100 A, 4750 A, and 5500 A) 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-starburst systems based on color criteria. When comparing our colors to the morphological results from Hubble Space Telescope HST imaging, we propose that the blue cluster galaxies are a population of late-type, low surface brightness objects which 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 spectral energy distribution 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.

Affiliated with

Also associated with

No associations

Rating

Color evolution from Z = 0 to Z = 1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Color evolution from Z = 0 to Z = 1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color evolution from Z = 0 to Z = 1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1819289