THE PROPERTIES OF QUASAR HOSTS AT THE PEAK OF THE QUASAR ACTIVITY

被引：26
作者：
Kotilainen, Jari K. [1 ]
Falomo, Renato [2 ]
Decarli, Roberto [3 ]
Treves, Aldo [3 ]
Uslenghi, Michela [4 ]
Scarpa, Riccardo [5 ]
机构：
[1] Univ Turku, Dept Phys & Astron, Tuorla Observ, FI-21500 Piikkio, Finland
[2] Osserv Astron Padova, INAF, I-35122 Padua, Italy
[3] Univ Insubria, I-22100 Como, Italy
[4] INAF IASF Milano, I-20133 Milan, Italy
[5] Inst Astrofis Canarias, E-38205 Tenerife, Spain
来源：
ASTROPHYSICAL JOURNAL | 2009年 / 703卷 / 02期
基金：
芬兰科学院; 美国国家科学基金会; 美国国家航空航天局;
关键词：
galaxies: active; galaxies: evolution; infrared: galaxies; quasars: general; HIGH-REDSHIFT QUASARS; SUPERMASSIVE BLACK-HOLES; SPACE-TELESCOPE IMAGES; STAR-FORMATION HISTORY; RADIO-QUIET QUASARS; EARLY-TYPE GALAXIES; DIGITAL SKY SURVEY; LUMINOSITY FUNCTION; ADAPTIVE OPTICS; GALACTIC NUCLEI;
D O I：
10.1088/0004-637X/703/2/1663
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present near-infrared imaging obtained with ESO VLT/ISAAC of a sample of 16 low luminosity radio-quiet quasars (RQQs) at the epoch around the peak of the quasar activity ( 2 < z < 3), aimed at investigating their host galaxies. For 11 quasars, we are able to detect the host galaxies and derive their properties, while for the other 5 quasars, upper limits to the host luminosity are estimated. The luminosities of the host galaxies of RQQs at high redshift are in the range of those of massive inactive elliptical galaxies. This work complements our previous systematic study of quasar hosts aimed to trace the cosmological luminosity evolution of the host galaxies up to z similar to 2 and extends our pilot study of a few luminous quasars at z > 2. The luminosity trend with a cosmic epoch resembles that observed for massive inactive galaxies, suggesting a similar star formation history. In particular, both quasar host galaxies and massive inactive galaxies appear mostly assembled already at the peak age of the quasar activity. This result is of key importance for testing the models of joint formation and evolution of galaxies and their active nuclei.
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收藏
页码：1663 / 1671
页数：9
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