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arXiv · 1701.05765

Confirmation of six Be X-ray binaries in the Small Magellanic Cloud

V. A. McBride·A. Gonzalez-Galan·A. J. Bird·M. J. Coe·E. S. Bartlett·R. Dorda·F. Haberl·A. Marco·I. Negueruela·M. P. E. Schurch·R. Sturm·D. A. H. Buckley·A. Udalski
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Abstract

The X-ray binary population of the Small Magellanic Cloud (SMC) contains a large number of massive X-ray binaries and the recent survey of the SMC by XMM-Newton has resulted in almost 50 more tentative high mass X-ray binary candidates. Using probability parameters from Haberl & Sturm (2016) together with the optical spectra and timing in this work, we confirm six new massive X-ray binaries in the SMC. We also report two very probable binary periods; of 36.4d in XMM 1859 and of 72.2 d in XMM 2300. These Be X-ray binaries are likely part of the general SMC population which rarely undergoes an X-ray outburst.

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V. A. McBride, A. Gonzalez-Galan, A. J. Bird, M. J. Coe, E. S. Bartlett, R. Dorda, F. Haberl, A. Marco, I. Negueruela, M. P. E. Schurch, R. Sturm, D. A. H. Buckley, A. Udalski. 2017-01-20. Confirmation of six Be X-ray binaries in the Small Magellanic Cloud. https://doi.org/10.1093/mnras/stx181

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