Serjeant, Stephen and Hatziminaoglou, Evanthia
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|DOI (Digital Object Identifier) Link:||http://doi.org/10.1111/j.1365-2966.2009.14431.x|
|Google Scholar:||Look up in Google Scholar|
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|
|Copyright Holders:||2009 The Authors, 2009 RAS|
|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)|
|Depositing User:||Tracy Bartlett|
|Date Deposited:||17 Dec 2010 10:05|
|Last Modified:||23 Feb 2016 18:24|
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