Simpson, C;
Almaini, O;
Cirasuolo, M;
Dunlop, J;
Foucaud, S;
Hirst, P;
Ivison, R;
... Watson, MG; + view all
(2006)
Extremely red objects in the UKIDSS Ultra Deep Survey Early Data Release.
Monthly Notices of the Royal Astronomical Society
, 373
(1)
L21 - L25.
10.1111/j.1745-3933.2006.00235.x.
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Abstract
We construct a sample of extremely red objects (EROs) within the UKIDSS Ultra Deep Survey by combining the Early Data Release with optical data from the Subaru/XMM–Newton Deep Field. We find a total of 3715 objects over 2013 arcmin2 with R−K > 5.3 and K≤ 20.3, which is a higher surface density than found by previous studies. This is partly due to our ability to use a small aperture in which to measure colours, but is also the result of a genuine overdensity of objects compared to other fields. We separate our sample into passively evolving and dusty star-forming galaxies using their RJK colours and investigate their radio properties using a deep radio map. The dusty population has a higher fraction of individually detected radio sources and a higher mean radio flux density among the undetected objects, but the passive population has a higher fraction of bright radio sources, suggesting that active galactic nuclei are more prevalent among the passive ERO population.
| Type: | Article |
|---|---|
| Title: | Extremely red objects in the UKIDSS Ultra Deep Survey Early Data Release |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/j.1745-3933.2006.00235.x |
| Publisher version: | http://dx.doi.org/10.1111/j.1745-3933.2006.00235.x |
| Language: | English |
| Additional information: | © 2006 RAS Definitive versions of articles pre-2013 are available at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966, now published by http://mnras.oxfordjournals.org |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/44065 |
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