A. Paizis et al 2007 ApJ 657 L109 doi:10.1086/513313
A. Paizis1, M. A. Nowak2, S. Chaty3, J. Rodriguez3, T. J.-L. Courvoisier4,5, M. Del Santo6, K. Ebisawa7, R. Farinelli8, P. Ubertini6 and J. Wilms9
Show affiliationsWe report on a Chandra grating observation of the recently discovered hard X-ray transient IGR J17497-2821. The observation took place about 2 weeks after the discovery of the source at a flux level of about 20 mcrab in the 0.8-8 keV range. We extracted the most precise X-ray position of IGR J17497-2821, i.e., αJ2000 = 17h49m38.037s, δJ2000 = -28°21'17.37'' (with a 90% uncertainty of 0.6''). We also report on optical and near-infrared photometric follow-up observations based on this position. With the multiwavelength information at hand, we discuss the possible nature of the source, proposing that IGR J17497-2821 is a low-mass X-ray binary, most likely hosting a black hole, with a red giant K-type companion.
binaries: close; stars: individual (IGR J17497–2821); X-rays: binaries
Issue 2 (2007 March 10)
Received 2006 November 10, accepted for publication 2007 January 31
Published 2007 February 12
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