17d optical period confirmed in X-rays from IGR J00569-7226

ATel #5631; M. J. Coe (Southampton University), A. J. Bird (Southampton University), J. A. Kennea PSU), V. A. McBride (UCT/SAAO), E. S. Bartlett (UCT), L. J. Townsend (UCT) and F. Haberl (MPE).
on 5 Dec 2013; 19:45 UT
Credential Certification: Malcolm Coe (mjcoe@soton.ac.uk)

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A combination of Swift/XRT and INTEGRAL observations over the last 30 days has detected a modulation in the X-ray flux at a period around 17d in the newly discovered Small Magellanic Cloud source IGR J00569-7226 (Coe et al ATel #5547, Kennea #5553). Such a period was reported by Schmitdke et al (ATel #5557) based upon the first year of OGLE II observations of the optical counterpart. On-going INTEGRAL & XMM observations of this object suggest this source is still undergoing a Type II outburst typical of Be/X-ray binary systems. The outburst began in Sept 2013.