Journal Article

An AzTEC 1.1 mm survey of the GOODS-N field – I. Maps, catalogue and source statistics

T. A. Perera, E. L. Chapin, J. E. Austermann, K. S. Scott, G. W. Wilson, M. Halpern, A. Pope, D. Scott, M. S. Yun, J. D. Lowenthal, G. Morrison, I. Aretxaga, J. J. Bock, K. Coppin, M. Crowe, L. Frey, D. H. Hughes, Y. Kang, S. Kim and P. D. Mauskopf

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 391, issue 3, pages 1227-1238
Published in print December 2008 | ISSN: 0035-8711
Published online November 2008 | e-ISSN: 1365-2966 | DOI:
An AzTEC 1.1 mm survey of the GOODS-N field – I. Maps, catalogue and source statistics

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We have conducted a deep and uniform 1.1 mm survey of the Great Observatories Origins Deep Survey-North (GOODS-N) field with AzTEC on the James Clerk Maxwell Telescope. Here, we present the first results from this survey including maps, the source catalogue and 1.1 mm number counts. The results presented here were obtained from a 245 arcmin2 region with a near uniform coverage to a depth of 0.96–1.16 mJy beam−1. Our robust catalogue contains 28 source candidates detected with S/N ≥ 3.75, only ∼1– 2 of which are expected to be spurious detections. Of these source candidates, eight are also detected by Submillimetre Common-User Bolometer Array (SCUBA) at 850 μm in regions where there is a good overlap between the two surveys. The major advantage of our survey over that with SCUBA is the uniformity of coverage. We calculate number counts using two different techniques: the first using a frequentist parameter estimation and the second using a Bayesian method. The two sets of results are in good agreement. We find that the 1.1 mm differential number counts are well described in the 2–6 mJy range by the functional form dN/dS=N′(S′/S) exp(−S/S′) with fitted parameters S′= 1.25 ± 0.38 mJy and dN/dS= 300 ± 90 mJy−1deg−2 at 3 mJy.

Keywords: instrumentation: detectors; galaxies: high redshift; galaxies: starburst; submillimetre

Journal Article.  9394 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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