Serjeant, Stephen; Farrah, Duncan; Geach, James; Takagi, Toshinobu; Verma, Aprajita; Kaviani, Ali and Fox, Matt
(2003).
| URL: | http://arxiv.org/abs/astro-ph/0310661 |
|---|---|
| DOI (Digital Object Identifier) Link: | http://doi.org/10.1111/j.1365-2966.2003.07305.x |
| Google Scholar: | Look up in Google Scholar |
Abstract
We present the K-band Hubble diagrams (K-z relations) of submillimetre-selected galaxies and hyperluminous galaxies (HLIRGs). We report the discovery of a remarkably tight K-z relation of HLIRGs, indistinguishable from that of the most luminous radio galaxies. Like radio galaxies, the HLIRG K-z relation at z<~ 3 is consistent with a passively evolving ~3L* instantaneous starburst starting from a redshift of z~ 10. In contrast, many submillimetre-selected galaxies are >~2 mag fainter, and the population has a much larger dispersion. We argue that dust obscuration and/or a larger mass range may be responsible for this scatter. The galaxies so far proved to be hyperluminous may have been biased towards higher AGN bolometric contributions than submillimetre-selected galaxies due to the 60-mum selection of some, so the location on the K-z relation may be related to the presence of the most massive active galactic nucleus. Alternatively, a particular host galaxy mass range may be responsible for both extreme star formation and the most massive active nuclei.
| Item Type: | Journal Article |
|---|---|
| ISSN: | 1365-2966 |
| Extra Information: | Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract. |
| Academic Unit/Department: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 5679 |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 25 Oct 2006 |
| Last Modified: | 02 Aug 2016 13:01 |
| URI: | http://oro.open.ac.uk/id/eprint/5679 |
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