Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 413, Issue 4, Pages 2314-2338Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2010.18132.x
Keywords
galaxies: formation; galaxies: starburst; cosmology: observations; early Universe
Categories
Funding
- NASA
- STFC
- National Aeronautics and Space Administration
- STFC [ST/H001913/1, ST/I001573/1, ST/F008694/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F008694/1, ST/I001573/1, ST/H001913/1] Funding Source: researchfish
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We present radio and infrared (3.6-24 m) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field-South with the Large APEX Bolometer Camera (LABOCA) 870- m 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, S-870 > 4.4 mJy] in the field, 62 via their radio and/or 24- m emission, the remainder using a colour-flux cut on Infrared Array Camera 3.6- and 5.8- m sources chosen to maximize the number of secure, coincident radio and 24- m 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 (1 errors) for the secure radio counterparts, in agreement with other studies, both spectroscopic and photometric.
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