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An X-Ray Investigation of the NGC346 Field in the SMC (3): XMM-Newton DataWe present new XMM-Newton results on the field around the NGC346 star cluster in the SMC. This continues and extends previously published work on Chandra observations of the same field. The two XMM-Newton observations were obtained, respectively, six months before and six months after the previously published Chandra data. Of the 51 X-ray sources detected with XMM-Newton, 29 were already detected with Chandru. Comparing the properties of these X-ray sources in each of our three datasets has enabled us to investigate their variability on times scales of a year. Changes in the flux levels and/or spectral properties were observed for 21 of these sources. In addition, we discovered long-term variations in the X-ray properties of the peculiar system HD5980, a luminous blue variable star, that is likely to be a colliding wind binary system, which displays the largest luminosity during the first XMM-Newton observation.
Document ID
Document Type
Preprint (Draft being sent to journal)
Naze, Yael (Liege Univ. Belgium)
Manfroid, Jean (Liege Univ. Belgium)
Corcoran, Michael F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stevens, Ian R. (Birmingham Univ. United Kingdom)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Subject Category
Distribution Limits
Public Use Permitted.

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