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

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 657卷 / 02期

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

页码：L109 / L112

页数：4

共 29 条

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