ROSAT HRI catalogue of X-ray sources in the SMC region
Sasaki M, Haberl F, Pietsch W (2000)
Publication Status: Published
Publication Type: Journal article
Publication year: 2000
Journal
Publisher: E D P SCIENCES
Book Volume: 147
Pages Range: 75-91
Journal Issue: 1
Abstract
During the operational phase of the ROSAT satellite between 1990 and 1998 the X-ray telescope pointed 71 times to the Small Magellanic Cloud (SMC) for observations with the High Resolution Imager (HRI), covering a field of 5 degrees x 5 degrees. From these data a catalogue of 121 discrete X-ray sources was derived. By cross-correlating the source catalogue with the SIMBAD data base and the TYCHO catalogue, the systematic positional error of the HRI source positions could be reduced. In total the X-ray position for 99 HRI sources was corrected yielding positional errors between 1 " and 16 ". The HRI catalogue was also cross-correlated with the catalogues derived from the ROSAT Position Sensitive Propotional Counter (PSPC) pointings (Kahabka et al. 1999; Haberl et al. 2000). For 75 HRI sources PSPC counterparts were found and thus hardness ratios are given. With the help of the information obtained from the cross-correlations 56 HRI sources were identified with objects of known or proposed nature. Four foreground stars, six supernova remnants, four supersoft sources, 12 X-ray binaries, and one AGN were detected by the HRI. Based on the existence of a likely optical counterpart or properties like hardness ratio and X-ray to optical flux ratio, further 15 HRI sources were classified into different source types.
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APA:
Sasaki, M., Haberl, F., & Pietsch, W. (2000). ROSAT HRI catalogue of X-ray sources in the SMC region. Astronomy and Astrophysics Supplement Series, 147(1), 75-91.
MLA:
Sasaki, Manami, Frank Haberl, and Wolfgang Pietsch. "ROSAT HRI catalogue of X-ray sources in the SMC region." Astronomy and Astrophysics Supplement Series 147.1 (2000): 75-91.
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