Interferometer observations of molecular gas in radio galaxies

被引：5
作者：
Garcia-Burillo, S. [1 ]
Combes, F. [2 ]
Usero, A. [1 ,3 ]
Fuente, A. [1 ]
机构：
[1] OAN, Observ Madrid, E-28014 Madrid, Spain
[2] Observ Paris, LERMA, F-75014 Paris, France
[3] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England
来源：
ASTRONOMISCHE NACHRICHTEN | 2009年 / 330卷 / 2-3期
关键词：
galaxies: active; galaxies: ISM; galaxies: jets; galaxies: kinematics and dynamics; galaxies: nuclei; ABSORPTION; 3C-293;
D O I：
10.1002/asna.200811167
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the first results of a high-resolution study of the distribution and kinematics of molecular gas in two nearby radio galaxies, 4C 31.04 and 3C 293, representative of two different stages of evolution in radio-loud active galactic nuclei (AGN). These observations, conducted with the IRAM Plateau de Bure Interferometer (PdBI), map with unprecedented spatial resolution (similar to 0.5 ''-1 '') and sensitivity the emission and absorption of key molecular species such as CO, HCN and HCO+. We report on the detection of a kinematically disturbed and massive (M-gas similar to 10(10) M-circle dot) molecular/dusty disk of similar to 1.4 kpc-size fueling the central engine of the compact symmetric object (CSO) 4C 31.04. We also report on the detection of a massive (M-gas similar to 10(10) M-circle dot) regularly rotating similar to 7 kpc-size disk in the FR II radio galaxy 3C 293. A complex system of molecular line absorptions is detected against the mm-continuum source of this galaxy (AGN and jet). We compare the properties of the molecular disks in the two sources and discuss them in the light of the different theories describing the evolution of radio galaxies. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：245 / 248
页数：4
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