The search for molecular gas in the most distant submillimetre galaxy at z=4.76

Details The search for molecular gas in the most distant submillimetre galaxy at z=4.76 The search for molecular gas in the most distant submillimetre galaxy at z=4.76

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2375c&link_type=abstract

ATNF proposal C2089, Semester: July, 2009

Physics

Extragalactic, Atca

Scientific paper

We propose to use ATCA to measure the CO(2-1) and CO(5-4) emission in the highest redshift submm-selected galaxy (SMG) known: LESS J033229 at z=4.76. These observations will measure the gas mass and dynamics of this far-infrared luminous galaxy at a time when the Universe was only 1 Gyr old. In conjunction with similar observations of three z~4-4.5 SMG, these observations will constrain the potential evolution of the star formation and dynamical mass of these high redshift, but relatively typical, young galaxies and their potential role as the precursor population to the red-and-dead galaxies seen at z~3, as well as allowing us to contrast the physical state of the gas reservoirs in these early galaxies with the well-studied and more numerous SMG population at z~2. These observations will provide a sneak-preview of the science which ALMA will provide on the formation of the earliest massive galaxies in the Universe.

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