2004ApJ...600..670G

Query : 2004ApJ...600..670G

2004ApJ...600..670G - Astrophys. J., 600, 670-680 (2004/January-2)

Ni abundance in the core of the Perseus cluster: an answer to the significance of resonant scattering.

GASTALDELLO F. and MOLENDI S.

Abstract (from CDS):

Using an XMM-Newton observation of the Perseus cluster we show that the excess in the flux of the 7-8 keV line complex previously detected by ASCA and BeppoSAX is due to an overabundance of nickel rather than to an anomalously high Fe Heβ/Fe Heα ratio. This observational fact leads to the main result that resonant scattering, which was assumed to be responsible for the supposed anomalous Fe Heβ/Fe Heα ratio, is no longer required. The absence of resonant scattering points toward the presence of significant gas motions (either turbulent or laminar) in the core of the Perseus Cluster.

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Journal keyword(s): Galaxies: Abundances - galaxies: clusters: individual (A 426) - Galaxies: Clusters: Individual: Name: Perseus - Galaxies: Intergalactic Medium - Scattering - X-Rays: Galaxies

Simbad objects: 8

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Number of rows : 8
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 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
2 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
3 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
4 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
5 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
6 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
7 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
8 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0

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