RADIO GALAXY FEEDBACK IN X-RAY-SELECTED GROUPS FROM COSMOS: THE EFFECT ON THE INTRACLUSTER MEDIUM

被引：41

作者：

Giodini, S. ^{[1
]}

Smolcic, V. ^{[2
]}

Finoguenov, A. ^{[1
,3
]}

Boehringer, H. ^{[1
]}

Birzan, L. ^{[4
]}

Zamorani, G. ^{[5
]}

Oklopcic, A. ^{[6
]}

Pierini, D. ^{[1
]}

Pratt, G. W. ^{[7
]}

Schinnerer, E. ^{[8
]}

Massey, R. ^{[2
]}

Koekemoer, A. M. ^{[9
]}

Salvato, M. ^{[10
,11
]}

Sanders, D. B. ^{[12
]}

Kartaltepe, J. S. ^{[12
]}

Thompson, D. ^{[13
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[2] CALTECH, Pasadena, CA 91125 USA

[3] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA

[4] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[5] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy

[6] Univ Zagreb, Dept Phys, Zagreb 10000, Croatia

[7] Univ Paris Diderot, CNRS, Lab AIM, IRFU Serv Astrophys,CEA,DSM,CEA Saclay, F-91191 Gif Sur Yvette, France

[8] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[9] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[10] Excellence Cluster Universe, D-85748 Garching, Germany

[11] Max Planck Inst Plasma Phys, IPP, D-85748 Garching, Germany

[12] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

[13] Univ Arizona, Large Binocular Telescope Observ, Tucson, AZ 85721 USA

来源：

ASTROPHYSICAL JOURNAL | 2010年 / 714卷 / 01期

基金：

美国国家科学基金会;

关键词：

intergalactic medium; galaxies: active; galaxies: clusters: general; radio continuum: galaxies; X-rays: galaxies: clusters; ACTIVE GALACTIC NUCLEI; COLD DARK-MATTER; CLUSTER SCALING PROJECT; XMM-NEWTON OBSERVATION; COOLING FLOWS; AGN FEEDBACK; GAS FRACTIONS; T RELATION; MASS; ENTROPY;

D O I：

10.1088/0004-637X/714/1/218

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We quantify the importance of the mechanical energy released by radio galaxies inside galaxy groups. We use scaling relations to estimate the mechanical energy released by 16 radio-active galactic nuclei located inside X-ray-detected galaxy groups in the COSMOS field. By comparing this energy output to the host groups' gravitational binding energy, we find that radio galaxies produce sufficient energy to unbind a significant fraction of the intragroup medium. This unbinding effect is negligible in massive galaxy clusters with deeper potential wells. Our results correctly reproduce the breaking of self-similarity observed in the scaling relation between entropy and temperature for galaxy groups.

引用

页码：218 / 228

页数：11

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