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University of Massachusetts Amherst
Galaxies: distances and redshifts; galaxies: high-redshift; galaxies: starburst
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Full-Text Articles in Astrophysics and Astronomy
The Redshift And Nature Of Aztec/Cosmos 1: A Starburst Galaxy At Z = 4.6*, V Smolcic, Min Yun, Et. Al.
The Redshift And Nature Of Aztec/Cosmos 1: A Starburst Galaxy At Z = 4.6*, V Smolcic, Min Yun, Et. Al.
Astronomy Department Faculty Publication Series
Based on broadband/narrowband photometry and Keck DEIMOS spectroscopy, we report a redshift of z = 4.64+0.06 –0.08 for AzTEC/COSMOS 1, the brightest submillimeter galaxy (SMG) 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 μm), CSO/SHARC II (350 μm), and 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 3σ upper limits on the gas mass to 8 × 10 …