B3 Non-refereed article in a conference publication
Nuclear to host galaxy relation of high redshift quasars
Authors: Kotilainen JK
Conference name: The Nuclear Region, Host Galaxy and Environment of Active Galaxies
Publication year: 2008
Journal acronym: REV MEX AST ASTR
Series title: Revista Mexicana de Astronomia y Astrofisica Serie de Conferencias
Volume: 32
First page : 158
Last page: 160
Number of pages: 3
ISBN: 978-970-32-5297-8
ISSN: 1405-2059
Web address : http://www.astroscu.unam.mx/~rmaa/rmsc32_frameset.html(external)
Abstract
We present near-infrared imaging of quasars at 1 < z < 2, covering a large range (similar to 4 mag) of quasar luminosity function. The host galaxies of both radio-loud (RLQ) and radio-quiet (RQQ) quasars have luminosities in the range of massive inactive ellipticals, between L* and 10 L*. RLQ hosts are more luminous than RQQ hosts. This luminosity gap is independent of rest-frame U-band luminosity but correlated with rest-frame R-band luminosity. This color difference between RLQs and RQQs is likely a combination of an intrinsic difference in their SEDs, and a selection effect due to internal dust extinction. There is a reasonable correlation between the nuclear and host luminosities for RLQs but not for RQQs. If the R-band traces the bolometric luminosity, and if the host luminosity is proportional to the black hole mass, high redshift quasars emit with a narrow range of power with respect to their Eddington luminosity.
We present near-infrared imaging of quasars at 1 < z < 2, covering a large range (similar to 4 mag) of quasar luminosity function. The host galaxies of both radio-loud (RLQ) and radio-quiet (RQQ) quasars have luminosities in the range of massive inactive ellipticals, between L* and 10 L*. RLQ hosts are more luminous than RQQ hosts. This luminosity gap is independent of rest-frame U-band luminosity but correlated with rest-frame R-band luminosity. This color difference between RLQs and RQQs is likely a combination of an intrinsic difference in their SEDs, and a selection effect due to internal dust extinction. There is a reasonable correlation between the nuclear and host luminosities for RLQs but not for RQQs. If the R-band traces the bolometric luminosity, and if the host luminosity is proportional to the black hole mass, high redshift quasars emit with a narrow range of power with respect to their Eddington luminosity.
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