Molecular gas in Distant Red Galaxies

Details Molecular gas in Distant Red Galaxies Molecular gas in Distant Red Galaxies

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atnf.prop...70p&link_type=abstract

ATNF proposal C1455, Semester: April, 2006

Physics

Extragalactic, Atca

Scientific paper

A new and substantial population of galaxies at z>2 with red rest-frame optical colors were discovered recently from the deepest ground-based NIR survey to date with the VLT, using the simple criterion J_s-K_s>2.3. Their high M/L ratios imply a large contribution to stellar mass densities at redshifts z=2-3, and their average star formation rates of 150 Msol/yr are intermediate between those of sub-mm bright and Ly-break galaxies. We request ATCA observations to search for CO J=3-->2 emission from the large molecular gas reservoir in such a distant red galaxy at z=2.581,implied by its dust emission at 850 microns. If detected it will be the first such object detected in CO,providing important constraints on its evolutionary status and eventual stellar mass.

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