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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 607576.0, MPI für Astronomie / Publikationen_mpia
The LABOCA survey of the Extended Chandra Deep Field-South - radio and mid-infrared counterparts to submillimetre galaxies
Authors:Biggs, A. D.; Ivison, R. J.; Ibar, E.; Wardlow, J. L.; Dannerbauer, H.; Smail, I.; Walter, F.; Weiß, A.; Chapman, S. C.; Coppin, K. E. K.; De Breuck, C.; Dickinson, M.; Knudsen, K. K.; Mainieri, V.; Menten, K.; Papovich, C.
Date of Publication (YYYY-MM-DD):2011
Journal Abbrev.:Monthly Notices of the Royal Astronomical Society
Issue / Number:4
Start Page:2314
End Page:2338
Audience:Not Specified
Abstract / Description:We present radio and infrared (3.6-24 μm) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field-South with the Large APEX Bolometer Camera (LABOCA) 870-μm bolometer camera on the 12-m Atacama Pathfinder Experiment. Using the Very Large Array at 1.4 GHz and Spitzer, we have identified secure counterparts to 79 of the 126 SMGs [signal-to-noise ratio (S/N) > 3.7, S870 > 4.4 mJy] in the field, 62 via their radio and/or 24-μm emission, the remainder using a colour-flux cut on Infrared Array Camera 3.6- and 5.8-μm sources chosen to maximize the number of secure, coincident radio and 24-μm counterparts. In constructing our radio catalogue, we have corrected for the effects of 'flux boosting', then used the corrected flux densities to estimate the redshifts of the SMGs based on the radio/submm spectral indices. The effect of the boosting correction is to increase the median redshift by 0.2 resulting in a value of ? (1σ errors) for the secure radio counterparts, in agreement with other studies, both spectroscopic and photometric.
Free Keywords:galaxies: formation; galaxies: starburst; cosmology: observations; early Universe
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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