A1 Refereed original research article in a scientific journal
The host galaxies of radio-quiet quasars at 0.5 < z < 1.0
Authors: Hyvonen T, Kotilainen JK, Orndahl E, Falomo R, Uslenghi M
Publisher: EDP SCIENCES S A
Publication year: 2007
Journal name in source: ASTRONOMY & ASTROPHYSICS
Journal acronym: ASTRON ASTROPHYS
Volume: 462
Issue: 2
First page : 525
Last page: U100
Number of pages: 14
ISSN: 0004-6361
DOI: https://doi.org/10.1051/0004-6361:20065429
Abstract
The RQQ host galaxies are luminous (average MH = - 26.3 +/- 0.6) and large giant elliptical galaxies (average bulge scale length R(e) = 11.3 +/- 5.8 kpc). RQQ hosts are similar to 1 mag brighter than the typical low redshift galaxy luminosity L*, and their sizes are similar to those of galaxies hosting lower redshift RQQs, indicating that there is no significant evolution at least up to z similar to 1 of the host galaxy structure. We also find that RQQ hosts are similar to 0.5-1 mag fainter than radio-loud quasar (RLQ) hosts at the similar redshift range. The comparison of the host luminosity of intermediate redshift RQQ hosts with that for lower z sources shows a trend that is consistent with that expected from the passive evolution of the stars in the host galaxies. The nuclear luminosity and the nucleus/host galaxy luminosity ratio of the objects in our sample are intermediate between those of lower redshift RQQs and those of higher redshift (z > 1) RQQs.
The RQQ host galaxies are luminous (average MH = - 26.3 +/- 0.6) and large giant elliptical galaxies (average bulge scale length R(e) = 11.3 +/- 5.8 kpc). RQQ hosts are similar to 1 mag brighter than the typical low redshift galaxy luminosity L*, and their sizes are similar to those of galaxies hosting lower redshift RQQs, indicating that there is no significant evolution at least up to z similar to 1 of the host galaxy structure. We also find that RQQ hosts are similar to 0.5-1 mag fainter than radio-loud quasar (RLQ) hosts at the similar redshift range. The comparison of the host luminosity of intermediate redshift RQQ hosts with that for lower z sources shows a trend that is consistent with that expected from the passive evolution of the stars in the host galaxies. The nuclear luminosity and the nucleus/host galaxy luminosity ratio of the objects in our sample are intermediate between those of lower redshift RQQs and those of higher redshift (z > 1) RQQs.
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