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AzTEC millimetre survey of the COSMOS field – III. Source catalogue over 0.72 deg^(2) and plausible boosting by large-scale structure
dc.contributor.author | Aretxaga, I. | |
dc.contributor.author | Wilson, Graham Wallace | |
dc.contributor.author | Aguilar, E. | |
dc.contributor.author | Alberts, S. | |
dc.contributor.author | Scott, K. S. | |
dc.contributor.author | Scoville, N. | |
dc.contributor.author | Yun, M. S. | |
dc.contributor.author | Austermann, J. E. | |
dc.contributor.author | Downes, T. P. | |
dc.contributor.author | Ezawa, H. | |
dc.contributor.author | Hatsukade, B. | |
dc.contributor.author | Hughes, D. H. | |
dc.contributor.author | Kawabe, R. | |
dc.contributor.author | Kohno, K. | |
dc.contributor.author | Oshima, T. | |
dc.contributor.author | Perera, Thushara A. | |
dc.contributor.author | Tamura, Y. | |
dc.contributor.author | Zeballos, M. | |
dc.date.accessioned | 2015-05-12T21:32:37Z | |
dc.date.available | 2015-05-12T21:32:37Z | |
dc.date.issued | 2011-08-21 | |
dc.identifier.citation | Aretxaga, I. et al. (2011). "AzTEC millimetre survey of the COSMOS field – III. Source catalogue over 0.72 deg^(2) and plausible boosting by large-scale structure." Monthly Notices Of The Royal Astronomical Society, 415(4):3831-3850. http://www.dx.doi.org/10.1111/j.1365-2966.2011.18989.x. | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/17744 | |
dc.description | This article has been accepted for publication in Monthly Notices Of The Royal Astronomical Society ©: 2011. Aretxaga et al. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | en_US |
dc.description.abstract | We present a 0.72 deg2 contiguous 1.1-mm survey in the central area of the Cosmological Evolution Survey field carried out to a 1σ≈ 1.26 mJy beam−1 depth with the AzTEC camera mounted on the 10-m Atacama Submillimeter Telescope Experiment. We have uncovered 189 candidate sources at a signal-to-noise ratio (S/N) ≥ 3.5, out of which 129, with S/N ≥ 4, can be considered to have little chance of being spurious (≲2 per cent). We present the number counts derived with this survey, which show a significant excess of sources when compared to the number counts derived from the ∼0.5 deg2 area sampled at similar depths in the Submillimetre Common-User Bolometer Array (SCUBA) HAlf Degree Extragalactic Survey (SHADES). They are, however, consistent with those derived from fields that were considered too small to characterize the overall blank-field population. We identify differences to be more significant in the S1.1mm≳ 5 mJy regime, and demonstrate that these excesses in number counts are related to the areas where galaxies at redshifts z≲ 1.1 are more densely clustered. The positions of optical–infrared galaxies in the redshift interval 0.6 ≲z≲ 0.75 are the ones that show the strongest correlation with the positions of the 1.1-mm bright population (S1.1mm≳ 5 mJy), a result which does not depend exclusively on the presence of rich clusters within the survey sampled area. The most likely explanation for the observed excess in number counts at 1.1-mm is galaxy–galaxy and galaxy–group lensing at moderate amplification levels, which increases in amplitude as one samples larger and larger flux densities. This effect should also be detectable in other high-redshift populations. | en_US |
dc.publisher | Oxford University Press | en_US |
dc.title | AzTEC millimetre survey of the COSMOS field – III. Source catalogue over 0.72 deg^(2) and plausible boosting by large-scale structure | en_US |
dc.type | Article | |
kusw.kuauthor | Wilson, Graham Wallace | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1111/j.1365-2966.2011.18989.x | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |