Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21531402b&link_type=abstract
American Astronomical Society, AAS Meeting #215, #314.02; Bulletin of the American Astronomical Society, Vol. 42, p.314
Astronomy and Astrophysics
Astronomy
Scientific paper
Recent deep near-infrared surveys have extended the study of the buildup of stellar mass in galaxies to ever-increasing redshifts. Improved methods for estimating photometric redshifts can allow us to exploit the full depths of such surveys that frequently reach much fainter than is currently feasible for large spectroscopic campaigns. I will present results from the NEWFIRM Medium-Band Survey, a 75-night survey program recently undertaken with the Mayall 4-m, that uses 5 medium-width NIR filters designed to measure precise photometric redshifts and rest-frame colors for galaxies at z > 1.5. We find that the color bimodality between "red and dead" and blue star-forming galaxies, prominent at lower redshifts, persists to at least z 2.5. The separation of the two color populations is greatly improved after accounting for the effects of dust-reddening of galaxies in the blue cloud. The existence of apparently "dead" galaxies at these high redshifts is remarkable, given the large gas reservoir available at those early times and the fact that the average star formation rate in the Universe was much higher than it is today.
Brammer Gabriel
NMBS Team
No associations
LandOfFree
The Evolution of Massive Galaxies at z>1.5 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 The Evolution of Massive Galaxies at z>1.5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Evolution of Massive Galaxies at z>1.5 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-961664