2003A&A...408...51G


Query : 2003A&A...408...51G

2003A&A...408...51G - Astronomy and Astrophysics, volume 408, 51-56 (2003/9-2)

Galaxy and hot gas distributions in the z=0.52 galaxy cluster RBS 380 from CHANDRA and NTT observations.

GIL-MERINO R. and SCHINDLER S.

Abstract (from CDS):

We present CHANDRA X-ray and NTT optical observations of the distant z=0.52 galaxy cluster RBS 380 - the most distant cluster of the ROSAT Bright Source (RBS) catalogue. We find diffuse, non-spherically symmetric X-ray emission with a X-ray luminosity of LX(0.3-10 keV)=1.6x1044erg/s, which is lower than expected from the RBS. The reason is a bright AGN in the centre of the cluster contributing considerably to the X-ray flux. This AGN could not be resolved with ROSAT. In optical wavelength we identify several galaxies belonging to the cluster. The galaxy density is at least 2 times higher than expected for such a X-ray faint cluster, which is another confirmation of the weak correlation between X-ray luminosity and optical richness. The example of the source confusion in this cluster shows how important high-resolution X-ray imaging is for cosmological research.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - intergalactic medium - cosmology: observations - cosmology: theory - dark matter - X-rays: galaxies

Nomenclature: Table 1: [GS2003] JHHMMSS.s+DDMMSS.s N=1.

CDS comments: ClG 0050-24 is a misprint for ClG 0500-24.

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 RBS 380 ClG 03 01 07.5 -47 06 25           ~ 5 0
2 [GS2003] J030107.8-470624.0 AGN 03 01 07.8 -47 06 24           ~ 1 0
3 ACO S 506 ClG 05 01 04.4 -24 24 41           ~ 57 0
4 ACO 851 ClG 09 42 56.6 +46 59 22           ~ 314 0

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2022.09.25-20:38:33

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