X-ray emission from dwarf galaxies: IC 2574 revisited
Source: Astrophysics and Space Science, Volume 284, Number 2, 2003 , pp. 627-630(4)
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.
Document Type: Research Article
Affiliations: 1: INAOE, Apdo. Postal 51 & 216, Puebla, Pue 72000, Mexico; E-mail: email@example.com 2: NRAO, AOC, P.O. Box O, Socorro, NM 87801, USA; E-mail: firstname.lastname@example.org 3: RAIUB, Auf dem Hügel 71, 53121 Bonn, Germany; E-mail: email@example.com
Publication date: January 1, 2003