The Redshift and Nature of AzTEC/COSMOS 1: A Starburst Galaxy at z = 4.6
Smol ci_s14c, V. and Capak, P. and Ilbert, O. and Blain, A.~W. and Salvato, M. and Aretxaga, I. and Schinnerer, E. and Masters, D. and Mori_s14c, I. a
Keywords
galaxies: distances and redshifts, galaxies: high-redshift, galaxies: starburst
Abstract
Based on broad/narrow-band photometry and Keck DEIMOS spectroscopy we report a redshift of z=4.64-0.08_s160.06 for AzTEC/COSMOS 1, the brightest sub-mm galaxy in the AzTEC/COSMOS field. In addition to the COSMOS-survey X-ray to radio data, we report observations of the source with Herschel/PACS (100, 160 micron), CSO/SHARC II (350 micron), CARMA and PdBI (3 mm). We do not detect CO(5-4) line emission in the covered redshift ranges, 4.56-4.76 (PdBI/CARMA) and 4.94-5.02 (CARMA). If the line is within this bandwidth, this sets 3sigma upper limits on the gas mass to
