X-ray emission from dwarf galaxies: IC 2574 revisited |
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| Authors: | Elias Brinks Fabian Walter Jürgen Kerp |
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| Institution: | (1) INAOE, Apdo. Postal 51 & 216, Puebla, Pue, 72000, Mexico;(2) NRAO, AOC, P.O. Box O, Socorro, NM 87801, USA;(3) RAIUB, Auf dem Hügel 71, 53121 Bonn, Germany |
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| Abstract: | Until recently, few unequivocal detections had been reported of the hot, X-ray emitting gas thought to be associated with
the large, coherent structures variously described as supershells or superbubbles in dwarf irregular (dIrr) galaxies. In this
contribution we report follow-up XMM-Newton and Chandra observations of our ROSAT detection of X-ray emission associated with the supergiant shell in the nearby dIrr galaxy IC 2574, a member of the M 81
group of galaxies. The spectral properties of the X-ray source suggest that we are dealing with a young (age < 2000 yr) supernova
remnant (SNR). This SNR is most likely one of the many supernovae which have exploded in that region and which have created
the impressive supergiant HI shell.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | galaxies: individual (IC 2574) galaxies: ISM X-rays |
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