ASCA Observations of Abell 2255

Details ASCA Observations of Abell 2255 ASCA Observations of Abell 2255

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.3801d&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #38.01; Bulletin of the American Astronomical Society, Vol. 30, p.1301

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Scientific paper

As observations of clusters of galaxies in the X-ray regime improve, there is increasing evidence that mergers in rich clusters are common. Like other rich clusters, Abell 2255 shows many of the signs of a major merger. These include an extensive radio halo, a pair of central dominant galaxies, elliptical X-ray isophotes that are offset from the dominant galaxies, and strong temperature variations in the X-ray emitting gas. The ROSAT PSPC data indicate that the gas temperature may vary by a factor of almost eight from the cool to the hot regions. Here we present ASCA observations of this cluster which confirm the strong spatial temperature variations seen in the X-ray gas with the ROSAT PSPC, and we discuss the merger history for this cluster.

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