SIMBAD references

1997A&A...322...66S - Astronomy and Astrophysics, volume 322, 66-72 (1997/6-1)

ROSAT/HRI study of the optically rich, lensing cluster Cl 0500-24.


Abstract (from CDS):

An analysis of a ROSAT/HRI observation of the optically rich, gravitationally lensing galaxy cluster Cl 0500-24 (or Abell S0506) is presented. The X-ray luminosity and the morphology of the extended X-ray emission support the view that Cl 0500-24 consists of two subclusters at a velocity difference of {DELTA}v≃3200km/s that happen to lie along the line of sight and are probably physically unrelated. The X-ray emission is mainly correlated with one of the subclusters - the northern subconcentration at redshift z=0.327. We show that the X-ray luminosity of this supposedly rich cluster is relatively low at 3.1+0.6–0.4x1044erg/s in the ROSAT band (5.6+4.2–2.0x1044erg/s bolometric) indicating that there is no tight correlation between X-ray luminosity and optical richness. The derived total mass of the cluster of (1.5±0.8)x1014M (within 1Mpc of the X-ray maximum) is very low even when assigning it only to one subcluster. The gas mass within the same radius is 0.5x1014M, corresponding to a high gas mass fraction of 30+30–10%.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: individual: ClG 0500-24 - galaxies: clusters: individual: A S0506 - intergalactic medium - dark matter - X-rays: galaxies

Status at CDS:  

CDS comments: p.67 : Galaxy 12 = [G90] 12, galaxies N and C are [IFH94] N and C, p.70 : Cl 0939+4713 = ClG 0939+47

Simbad objects: 7

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