Chandra observation of M84, a radio lobe elliptical galaxy in the Virgo Cluster

被引:130
作者
Finoguenov, A
Jones, C
机构
[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[2] Harvard Smithsonian Ctr Astrophys, Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
基金
美国国家航空航天局;
关键词
galaxies : abundances; galaxies : elliptical and lenticular; cD; galaxies : individual (NGC 4374) intergalactic medium; X-rays : galaxies;
D O I
10.1086/318910
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We analyzed a deep Chandra observation of M84, a bright elliptical galaxy in the core of the Virgo Cluster. We find that the spatial distribution of the soft X-ray emission is defined by the radio structure of the galaxy. In particular, we find two low-density regions associated with the radio lobes and surrounded by higher density X-ray filaments. In addition to a central active galactic nucleus (AGN) and a population of galactic sources, we find a diffuse hard source filling the central 10 kpc region. Since the morphology of the hard source appears round and is different from that seen in the radio or in soft X-rays, we propose that it is hot gas heated by the central AGN. Finally, we find that the central elemental abundance in the X-ray gas is comparable to that measured optically.
引用
收藏
页码:L107 / L110
页数:4
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