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arXiv · 0909.3177

First redshift determination of an optically/UV faint submillimeter galaxy using CO emission lines

A. Weiss·R. J. Ivison·D. Downes·F. Walter·M. Cirasuolo·K. M. Menten
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Abstract

We report the redshift of a distant, highly obscured submm galaxy (SMG), based entirely on the detection of its CO line emission. We have used the newly commissioned Eight-MIxer Receiver (EMIR) at the IRAM 30m telescope, with its 8 GHz of instantaneous dual-polarization bandwidth, to search the 3-mm atmospheric window for CO emission from SMMJ14009+0252, a bright SMG detected in the SCUBA Lens Survey. A detection of the CO(3--2) line in the 3-mm window was confirmed via observations of CO(5--4) in the 2-mm window. Both lines constrain the redshift of SMMJ14009+0252 to z=2.9344, with high precision (dz=2 10^{-4}). Such observations will become routine in determining redshifts in the era of the Atacama Large Millimeter/submillimeter Array (ALMA).

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A. Weiss, R. J. Ivison, D. Downes, F. Walter, M. Cirasuolo, K. M. Menten. 2009-09-17. First redshift determination of an optically/UV faint submillimeter galaxy using CO emission lines. https://doi.org/10.1088/0004-637x/705/1/l45

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