Serjeant, Stephen and Hatziminaoglou, Evanthia
(2009).
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| DOI (Digital Object Identifier) Link: | http://dx.doi.org/10.1111/j.1365-2966.2009.14431.x |
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| Google Scholar: | Look up in Google Scholar |
Abstract
We have used far-infrared data from IRAS, Infrared Space Observatory (ISO), Spitzer Wide-Area Infrared Extragalactic (SWIRE), Submillimetre Common User Bolometer Array (SCUBA) and Max-Planck Millimetre Bolometer (MAMBO) to constrain statistically the mean far-infrared luminosities of quasars. Our quasar compilation at redshifts 0 < z < 6.5 and I-band luminosities -20 < IAB < -32 is the first to distinguish evolution from quasar luminosity dependence in such a study. We carefully cross-calibrate IRAS against Spitzer and ISO, finding evidence that IRAS 100-μm fluxes at <1 Jy are overestimated by ~30 per cent. We find evidence for a correlation between star formation in quasar hosts and the quasar optical luminosities, varying as star formation rate (SFR)α L0.44±0.07opt at any fixed redshift below z = 2.We also find evidence for evolution of the mean SFR in quasar host galaxies, scaling as (1 + z)1.6±0.3 at z < 2 for any fixed quasar I-band absolute magnitude fainter than -28. We find no evidence for any correlation between SFR and black hole mass at 0.5 < z < 4. Our data are consistent with feedback from black hole accretion regulating stellar mass assembly at all redshifts.
| Item Type: | Journal Article |
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| Copyright Holders: | 2009 The Authors, 2009 RAS |
| ISSN: | 1365-2966 |
| Keywords: | galaxies; active; high-redshift; quasars; infrared; submillimetre |
| Academic Unit/Department: | Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
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| Item ID: | 25573 |
| Depositing User: | Tracy Bartlett |
| Date Deposited: | 17 Dec 2010 10:05 |
| Last Modified: | 26 Nov 2012 18:24 |
| URI: | http://oro.open.ac.uk/id/eprint/25573 |
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