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American Astronomical Society, Astrophysical Journal, 2(752), p. 152, 2012

DOI: 10.1088/0004-637x/752/2/152

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BLIND DETECTIONS OF COJ= 1–0 IN 11 H-Atlas GALAXIES ATz= 2.1–3.5 WITH THE GBT/ZPECTROMETER

Journal article published in 2012 by A. I. Harris, A. J. Baker, D. T. Frayer, Ian Smail, A. M. Swinbank, D. A. Riechers, P. P. van der Werf, R. Auld, M. Baes, R. S. Bussmann, S. Buttiglione, A. Cava, D. L. Clements, A. Cooray, H. Dannerbauer and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We report measurements of the carbon monoxide ground state rotational transition ((CO)-C-12-O-16 J = 1-0) with the Zpectrometer ultrawideband spectrometer on the 100 m diameter Green Bank Telescope. The sample comprises 11 galaxies with redshifts between z = 2.1 and 3.5 from a total sample of 24 targets identified by Herschel-ATLAS photometric colors from the SPIRE instrument. Nine of the CO measurements are new redshift determinations, substantially adding to the number of detections of galaxies with rest-frame peak submillimeter emission near 100 mu m. The CO detections confirm the existence of massive gas reservoirs within these luminous dusty star-forming galaxies (DSFGs). The CO redshift distribution of the 350 mu m selected galaxies is strikingly similar to the optical redshifts of 850 mu m-selected submillimeter galaxies in 2.1