A1 Refereed original research article in a scientific journal
The host galaxies of low luminosity quasars at high redshift
Authors: Kotilainen JK, Falomo R, Treves A, Uslenghi M
Publisher: ELSEVIER SCI LTD
Publication year: 2006
Journal:New Astronomy Reviews
Journal name in sourceNEW ASTRONOMY REVIEWS
Journal acronym: NEW ASTRON REV
Volume: 50
Issue: 9-10
First page : 772
Last page: 775
Number of pages: 4
ISSN: 1387-6473
DOI: https://doi.org/10.1016/j.newar.2006.06.037
Abstract
We present VLT/ISAAC near-infrared imaging of the host galaxies of 15 low luminosity quasars at 1 < z < 2. This work complements our studies to trace the cosmological evolution of the host galaxies of high luminosity quasars. The radio-loud (RLQ) and radio-quiet (RQQ) quasars have similar distribution of redshift and luminosity, and together the high and low luminosity quasars cover a large range of the quasar luminosity function. Both RLQ and RQQ hosts resemble massive inactive ellipticals undergoing passive evolution. However, RLQ hosts are systematically more luminous than RQQ hosts, as also found for the high luminosity quasars. The difference in the host luminosity remains the same from z = 2 to 0. For the entire set of quasars, we find a correlation between the nuclear and the host luminosities, albeit with a large scatter. The correlation is less apparent for the RQQs than for the RLQs. (c) 2006 Elsevier B.V. All rights reserved.
We present VLT/ISAAC near-infrared imaging of the host galaxies of 15 low luminosity quasars at 1 < z < 2. This work complements our studies to trace the cosmological evolution of the host galaxies of high luminosity quasars. The radio-loud (RLQ) and radio-quiet (RQQ) quasars have similar distribution of redshift and luminosity, and together the high and low luminosity quasars cover a large range of the quasar luminosity function. Both RLQ and RQQ hosts resemble massive inactive ellipticals undergoing passive evolution. However, RLQ hosts are systematically more luminous than RQQ hosts, as also found for the high luminosity quasars. The difference in the host luminosity remains the same from z = 2 to 0. For the entire set of quasars, we find a correlation between the nuclear and the host luminosities, albeit with a large scatter. The correlation is less apparent for the RQQs than for the RLQs. (c) 2006 Elsevier B.V. All rights reserved.
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