X-ray emission from dwarf galaxies: IC 2574 revisited

Details X-ray emission from dwarf galaxies: IC 2574 revisited X-ray emission from dwarf galaxies: IC 2574 revisited

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap%26ss.284..627b&link_type=abstract

Astrophysics and Space Science, v. 284, Issue 2, p. 627-630 (2003).

Astronomy and Astrophysics

Astrophysics

Galaxies: Individual (Ic 2574), Galaxies: Ism, X-Rays

Scientific paper

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.

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