HI content and X-ray gas pressure in Morgan poor clusters

Details HI content and X-ray gas pressure in Morgan poor clusters HI content and X-ray gas pressure in Morgan poor clusters

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...190.5204w&link_type=abstract

American Astronomical Society, 190th AAS Meeting, #52.04; Bulletin of the American Astronomical Society, Vol. 29, p.848

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Scientific paper

We have analyzed archival ROSAT PSPC observations of the poor clusters, MKW 4, AWM 4, and AWM 5. Assuming an isothermal gas model, we find extended emission that is smooth, centrally peaked, and reasonably symmetric with X-ray temperatures in the range of 2-4 keV. These findings are consistent with previous observations of the clusters. Surface brightness emission extracted from the X-ray images is fit to a model that is used to obtain density and pressure profiles of the hot intra cluster gas in each cluster. In the direction of these poor clusters, we have observed in the 21-cm line more than 70 galaxies. The neutral hydrogen content of the spiral galaxies is investigated as a function of their location within these clusters. We examine, in particular, the neutral hydrogen content of the spiral members as a function of the local density and pressure of the hot intra cluster medium.

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