Unveiling the nature of IGR J17497-2821 using X-ray and near-infrared observations

被引:10
作者
Paizis, A. [1 ]
Nowak, M. A.
Chaty, S.
Rodriguez, J.
Courvoisier, T. J. -L.
Del Santo, M.
Ebisawa, K.
Farinelli, R.
Ubertini, P.
Wilms, J.
机构
[1] INAF, IASF, Milan, Italy
[2] MIT, Ctr Space Res, Cambridge, MA 02139 USA
[3] Univ Paris, CNRS,UMR 7158, CEA Saclay, DSM,DAPNIA,Serv Astrophys, Gif Sur Yvette, France
[4] INTEGRAL Sci Data Ctr, Versoix, Switzerland
[5] Observ Geneva, CH-1290 Sauverny, Switzerland
[6] INAF, IASF, Rome, Italy
[7] ISAS, Kanagawa, Japan
[8] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy
[9] Univ Erlangen Nurnberg, Inst Astron, Dr Karl Remeis Sternwarte, Bamberg, Germany
关键词
binaries : close; stars : individual (IGR J17497-2821); X-rays : binaries;
D O I
10.1086/513313
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We 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., alpha(J2000) = 17(h)49(m)38.037(s), delta(J2000) = -28 degrees 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.
引用
收藏
页码:L109 / L112
页数:4
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