SIMBAD references

2006PASJ...58..131F - Publ. Astron. Soc. Jap., 58, 131-141 (2006/February-0)

Chandra observations of A 2670 and A 2107: a comet galaxy and cDs with large peculiar velocities.


Abstract (from CDS):

begin{HTML} We present an analysis of Chandra observations of the galaxy clusters A 2670 and A 2107. Their cD galaxies have large peculiar velocities (>200 km s<sup>-1</sup>) and thus the clusters appear to be undergoing mergers. In A 2670, we find a comet-like structure around one of the brightest galaxies. At the leading edge of the structure, there is a cold front. The mass of the X-ray gas in the comet-like structure suggests that the galaxy was in a small cluster or group, and its intracluster medium is being stripped by ram-pressure. The regions of cool interstellar medium of the cD galaxies in A 2670 and A 2107 are very compact. This is similar to the brightest galaxies in the Coma cluster, which is also a merging cluster. In each galaxy, the short cooling time of the ISM requires a heating source; the compact nature of the ISM makes it unlikely that the heating source is a central active galactic nucleus.

Abstract Copyright:

Journal keyword(s): cooling flows - galaxies: clusters: general - galaxies: clusters: individual: (Abell 2107, Abell 2670) - intergalactic medium - X-rays: galaxies: clusters

Simbad objects: 19

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