AAS 200th meeting, Albuquerque, NM, June 2002
Session 46. Astrophysics in the Local Group
Display, Tuesday, June 4, 2002, 10:00am-6:30pm, SW Exhibit Hall

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[46.10] XMM-Newton observations of Nearby Dwarf Galaxies

F. Walter (California Institute of Technology), J. Kerp (Radioastronoisches Institut Bonn)

We present first results of our XMM-Newton observations of the nearby dwarf galaxies IC 2574, Holmberg I and Sextans A. These objects are part of our multi-frequency observing campaign to study the physical conditions of the interstellar medium (ISM) of dwarf galaxies. The selected ensemble of low-mass dwarf galaxies was chosen to show prominent supergiant HI holes in their ISM which are considered to be tracers of past massive star formation. Using the new XMM-Newton data we search for X-ray emission emerging from coronal gas inside these HI holes. We present a correlation analysis of the various unresolved X-ray sources and their counterparts seen in other wavelengths. We also discuss whether or not evidence is found that hot gas is vent into the halo of these low-mass systems.

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.