Journal Article

The <i>XMM–Newton</i> survey of the Small Magellanic Cloud: XMMU J010633.1−731543 and XMMU J010743.1−715953, two new Be/X-ray binary systems*

M. J. Coe, F. Haberl, R. Sturm, E. S. Bartlett, D. Hatzidimitriou, L. J. Townsend, A. Udalski, S. Mereghetti and M. Filipović

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 424, issue 1, pages 282-292
Published in print July 2012 | ISSN: 0035-8711
Published online July 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.21193.x
The XMM–Newton survey of the Small Magellanic Cloud: XMMU J010633.1−731543 and XMMU J010743.1−715953, two new Be/X-ray binary systems*

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In the course of the XMM–Newton survey of the Small Magellanic Cloud (SMC), two new bright X-ray sources were discovered exhibiting the spectral characteristics of high-mass X-ray binaries – but revealing only weak evidence for pulsations in just one of the objects (at 153 s in XMMU J010743.1−715953). The accurate X-ray source locations permit the identification of these X-ray sources with Be stars, thereby strongly suggesting that these systems are new Be/X-ray binaries. From blue spectra the proposed classification for XMMU J010633.1−731543 is B0.5-1Ve and for XMMU J010743.1−715953 it is B2IV-Ve.

Keywords: stars: neutron; X-rays: binaries

Journal Article.  6432 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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