2001A&A...365L..67A


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST09:37:46

2001A&A...365L..67A - Astronomy and Astrophysics, volume 365, L67-73 (2001/1-1)

XMM-Newton observation of the Coma Galaxy cluster. The temperature structure in the central region.

ARNAUD M., AGHANIM N., GASTAUD R., NEUMANN D.M., LUMB D., BRIEL U., ALTIERI B., GHIZZARDI S., MITTAZ J., SASSEEN T.P. and VESTRAND W.T.

Abstract (from CDS):

We present a temperature map and a temperature profile of the central part (r <20' or 1/4 virial radius) of the Coma cluster. We combined 5 overlapping pointings made with XMM/EPIC/MOS and extracted spectra in boxes of 3.5'x3.5'. The temperature distribution around the two central galaxies is remarkably homogeneous (r<10'), contrary to previous ASCA results, suggesting that the core is actually in a relaxed state. At larger distance from the cluster center we do see evidence for recent matter accretion. We confirm the cool area in the direction of NGC 4921, probably due to gas stripped from an infalling group. We find indications of a hot front in the South West, in the direction of NGC 4839, probably due to an adiabatic compression.

Abstract Copyright:

Journal keyword(s): galaxies: intergalactic medium - Cosmology: observations - Cosmology: dark matter - large-scale structure of the Universe - X-rays: general Cosmology:

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME NGC 4839 Group GrG 12 57 24.3 +27 29 51           ~ 58 0
2 NGC 4839 rG 12 57 24.353 +27 29 51.80 13.56 13.02 12.06     ~ 420 3
3 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 713 3
4 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4208 2
5 NGC 4889 BiC 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 642 1
6 NGC 4911 LIN 13 00 56.0616026595 +27 47 27.151217355 14.58 13.7 13.33 12.601 12.068 ~ 179 0
7 NGC 4921 LIN 13 01 26.1220299719 +27 53 09.631792431   13.7       ~ 170 0
8 PB 3223 Sy1 13 01 28.1470421809 +27 51 06.686998633   18.32 17.91     ~ 22 0
9 NGC 4991 rG 13 09 15.110 +02 20 51.34   15.5       ~ 13 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-09:37:46

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