AAS 203rd Meeting, January 2004
Session 122 Antenna Galaxies
Poster, Thursday, January 8, 2004, 9:20am-4:00pm, Hanover Hall

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[122.02] The Multi-colored Hot Insterstellar Medium of the Antennae

A.H. Rots, G. Fabbiano (Harvard-Smithsonian Center for Astrophysics), M. Krauss (Massachusetts Institute of Technology), A. Zezas (Harvard-Smithsonian Center for Astrophysics), S.G. Neff (NASA/Goddard Space Flight Center), J.E. Hibbard (National Radio Astronomy Observatory)

We present a multi-color X-ray image based on Chandra observations of the extended soft emission in the Antennae. It suggests considerable absorption by dust, as well as variations in the temperature of different regions of the hot interstellar medium. We compare the distribution of the extended X-ray emission with emission detected at other wavebands (6 cm radio continuum, HI, CO, and H-alpha), allowing us a look at the multiphase ISM. Pressures in the hot and cold gas in the nuclear regions appear very similar. The remarkable displacement between the X-ray on the one hand, and the H-alpha, radio continuum, and HI on the other in the northern spiral arm may well be due to ram pressure from infalling gas.

This research has been supported by NASA contract NAS 8-39073 (CXC).

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.