An ultra-deep Spitzer look at the most distant galaxy cluster

Details An ultra-deep Spitzer look at the most distant galaxy cluster An ultra-deep Spitzer look at the most distant galaxy cluster

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sptz.prop80103g&link_type=abstract

Spitzer Proposal ID #80103

Computer Science

Scientific paper

We propose to obtain very deep IRAC imaging in the 3.6 and 4.5 micron passbands on the recently discovered Cl J1449+0856, the most distant galaxy cluster to date, at z=2.07. This very distant cluster is different from z>2 proto-clusters in that it shows both an X-ray emission and a significant population of quiescent galaxies, suggesting an evolved state despite its high redshift. It thus offers a unique opportunity of studying galaxy evolution in overdense environments at early cosmic times. The proposed observations will probe for the first time the rest-frame near-infrared emission of faint cluster galaxies at z~2, allowing us to determine the stellar mass function at a cosmic epoch which is thought to be critical for witnessing ongoing stellar mass assembly in cluster galaxies. These data will be a crucial counterpart of the already available deep HST NICMOS and WFC3 photometry in identifying cluster members. Moreover, the deep rest-frame near-infrared photometry will be a fundamental tool in disentangling the red cluster galaxy population in its two components of truly quiescent objects and heavily reddened star forming sources. The proposed observations will thus allow us to take full advantage of the unique discovery of Cl J1449+0856 to test different scenarios for the evolution of cluster galaxies at a still unprobed epoch.

Affiliated with

Also associated with

No associations

Rating

An ultra-deep Spitzer look at the most distant galaxy cluster 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 An ultra-deep Spitzer look at the most distant galaxy cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An ultra-deep Spitzer look at the most distant galaxy cluster will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1207733