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Date and Time of the Query: 2019-08-23 T11:40:44 PDT
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For refcode 2013ApJ...777L..36G:
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2013ApJ...777L..36G Multi-wavelength Studies of Spectacular Ram Pressure Stripping of a Galaxy: Discovery of an X-Ray Absorption Feature Gu, Liyi; Yagi, Masafumi; Nakazawa, Kazuhiro; Yoshida, Michitoshi; Fujita, Yutaka; Hattori, Takashi; Akahori, Takuya; Makishima, Kazuo Abstract. We report the detection of an X-ray absorption feature near the galaxy M86 in the Virgo cluster. The absorber has a column density of 2-3 x 10^20^ cm^--2^, and its position coincides with the peak of an intracluster H I cloud which was removed from the galaxy NGC 4388 presumably by ram pressure. These results indicate that the H I cloud is located in front of M86 along the line-of-sight, and suggest that the stripping was primarily created by an interaction between NGC 4388 and the hot plasmas of the Virgo cluster, not the M86 halo. By calculating an X-ray temperature map, we further detected an X-ray counterpart of the H I cloud up to ~3' south of M86. It has a temperature of 0.89 keV and a mass of ~4.5 x 10^8^ M_sun_, exceeding the estimated H I gas mass. The high hot-to-cold gas ratio in the cloud indicates a significant evaporation of the H I gas, probably by thermal conduction from the hotter cluster plasma with a sub-Spitzer rate. Key words: galaxies: clusters: intracluster medium, galaxies: interactions, X-rays: ISM
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