Extremely Red Galaxies at z > 1 in the COSMOS Field

Details Extremely Red Galaxies at z > 1 in the COSMOS Field Extremely Red Galaxies at z > 1 in the COSMOS Field

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10303y&link_type=abstract

HST Proposal ID #10303

Mathematics

Logic

Hst Proposal Id #10303 Galaxies

Scientific paper

We propose to identify the population of extremely red galaxies {EROs} in the COSMOS treasury dataset, by combining the primary F814W images with their NICMOS F160W parallels. COSMOS parallels with NICMOS provide an unprecedented combination of extraordinary depth {Vega=24}, area coverage {200 sq. arcmin} and spatial resolution. The ERO selection will be limited by the F814W depth, so the entire red galaxy sample will consist of high significance detections suitable for quantative morphological analysis. We will measure the surface density of red galaxies {I-H > 3} fainter than current ground-based surveys can detect in order to determine whether the counts flatten beyond H=20.5. We will establish whether the large disk fraction {60%} seen in the optical holds true in near-infrared morphologies. And we will determine whether ERO clustering strength has any morphological dependence.

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