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The Bolocam Lockman Hole Millimeter-Wave Galaxy Survey: Galaxy Candidates and Number Counts

Laurent, G. T., Aguirre, J. E., Glenn, J., Ade, Peter A. R., Bock, J. J., Edgington, S. R., Goldin, A., Golwala, S. R., Haig, Douglas, Lange, A. E., Maloney, P. R., Mauskopf, Philip Daniel, Nguyen, H., Rossinot, P., Sayers, J. and Stover, P. 2005. The Bolocam Lockman Hole Millimeter-Wave Galaxy Survey: Galaxy Candidates and Number Counts. Astrophysical Journal 623 , pp. 742-762. 10.1086/428823

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Abstract

We present results of a new deep 1.1 mm survey using Bolocam, a millimeter-wavelength bolometer array camera designed for mapping large fields at fast scan rates, without chopping. A map, galaxy candidate list, and derived number counts are presented. This survey encompasses 324 arcmin2 to an rms noise level (filtered for point sources) of ?1:1 mm ’1:4 mJy beam?1 and includes the entire regions surveyed by the published 8 mJy 850 ?m JCMT SCUBA and 1.2 mm IRAM MAMBO surveys. We reduced the data using a custom software pipeline to remove correlated sky and instrument noise via a principal component analysis. Extensive simulations and jackknife tests were performed to confirm the robustness of our source candidates and estimate the effects of false detections, bias, and completeness. In total, 17 source candidates were detected at a significance ?3.0 ?, with six expected false detections. Nine candidates are new detections, while eight candidates have coincident SCUBA 850 ?m and/or MAMBO 1.2 mm detections. From our observed number counts, we estimate the underlying differential number count distribution of submillimeter galaxies and find it to be in general agreement with previous surveys. Modeling the spectral energy distributions of these submillimeter galaxies after observations of dusty nearby galaxies suggests extreme luminosities of L ¼ ð1:0 1:6Þ ; 1013 L? and, if powered by star formation, star formation rates of 500–800 M? yr?1.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: galaxies: high-redshift; galaxies: starburst; submillimeter
ISSN: 0004-637X
Last Modified: 04 Jun 2017 01:40
URI: http://orca-mwe.cf.ac.uk/id/eprint/1569

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