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dc.contributor.authorAustermann, J. E.
dc.contributor.authorAretxaga, I.
dc.contributor.authorHughes, D. H.
dc.contributor.authorKang, Y.
dc.contributor.authorKim, S.
dc.contributor.authorLowenthal, J. D.
dc.contributor.authorPerera, Thushara A.
dc.contributor.authorSanders, D. B.
dc.contributor.authorScott, K. S.
dc.contributor.authorScoville, N.
dc.contributor.authorWilson, Graham Wallace
dc.contributor.authorYun, M. S.
dc.date.accessioned2015-05-12T17:09:28Z
dc.date.available2015-05-12T17:09:28Z
dc.date.issued2009-03-11
dc.identifier.citationAustermann, J. E. et al. (2009). "AzTEC Millimetre Survey of the COSMOS field – II. Source count overdensity and correlations with large-scale structure." Monthly Notices Of The Royal Astronomical Society, 393(4):1573-1583. http://www.dx.doi.org/10.1111/j.1365-2966.2008.14284.x.en_US
dc.identifier.urihttp://hdl.handle.net/1808/17724
dc.descriptionThis article has been accepted for publication in Monthly Notices Of The Royal Astronomical Society ©: 2009 J. E. Austermann et al. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.en_US
dc.description.abstractWe report an overdensity of bright submillimetre galaxies (SMGs) in the 0.15 deg^(2) AzTEC/COSMOS survey and a spatial correlation between the SMGs and the optical-IR galaxy density at z≲ 1.1. This portion of the COSMOS field shows a ∼3σ overdensity of robust SMG detections when compared to a background, or ‘blank-field’, population model that is consistent with SMG surveys of fields with no extragalactic bias. The SMG overdensity is most significant in the number of very bright detections (14 sources with measured fluxes S1.1 mm > 6 mJy), which is entirely incompatible with sample variance within our adopted blank-field number densities and infers an overdensity significance of ≫ 4σ. We find that the overdensity and spatial correlation to optical-IR galaxy density are most consistent with lensing of a background SMG population by foreground mass structures along the line of sight, rather than physical association of the SMGs with the z≲ 1.1 galaxies/clusters. The SMG positions are only weakly correlated with weak-lensing maps, suggesting that the dominant sources of correlation are individual galaxies and the more tenuous structures in the survey region, and not the massive and compact clusters. These results highlight the important roles cosmic variance and large-scale structure can play in the study of SMGs.en_US
dc.publisherOxford University Pressen_US
dc.titleAzTEC Millimetre Survey of the COSMOS field – II. Source count overdensity and correlations with large-scale structureen_US
dc.typeArticle
kusw.kuauthorWilson, Graham Wallace
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.1111/j.1365-2966.2008.14284.x
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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