Deep Einstein X-ray imagery of the Small Magellanic Cloud

Details Deep Einstein X-ray imagery of the Small Magellanic Cloud Deep Einstein X-ray imagery of the Small Magellanic Cloud

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...317..152b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 317, June 1, 1987, p. 152-162.

Astronomy and Astrophysics

Astrophysics

26

Magellanic Clouds, Supernova Remnants, X Ray Imagery, X Ray Sources, Abundance, Early Stars, Heao 2, X Ray Binaries

Scientific paper

Deep Einstein IPC imagery of ≡50% of the main body and "wing" of the Small Magellanic Cloud has been obtained and analyzed. The four X-ray images have exposure times between 12,000 and 24,000 s and reveal a total of 25 X-ray sources. Twelve of these sources are new detections. Two, possibly three, sources with soft spectra may be newly discovered supernova remnants. The rest of the sources have harder spectra and intrinsic X-ray luminosities in the range 34.0 ⪉ log Lx ⪉ 35.0 and are most likely stellar objects in the SMC. It is suggested that at least some fraction of the SMC hard X-ray sources are associated with high luminosity, "normal" O and B stars in that metal deficient galaxy.

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