2010ApJ...714..218G

Query : 2010ApJ...714..218G

2010ApJ...714..218G - Astrophys. J., 714, 218-228 (2010/May-1)

Radio galaxy feedback in x-ray-selected groups from COSMOS: the effect on the intracluster medium.

GIODINI S., SMOLCIC V., FINOGUENOV A., BOEHRINGER H., BIRZAN L., ZAMORANI G., OKLOPCIC A., PIERINI D., PRATT G.W., SCHINNERER E., MASSEY R., KOEKEMOER A.M., SALVATO M., SANDERS D.B., KARTALTEPE J.S. and THOMPSON D.

Abstract (from CDS):

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.

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Journal keyword(s): intergalactic medium - galaxies: active - galaxies: clusters: general - radio continuum: galaxies - X-rays: galaxies: clusters

Nomenclature: Table 1: [GSF2010] NNN N=16 among (Nos 6-311).

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 273 0
2 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
3 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2

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