Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-12
Astrophys.J. 621 (2005) 393-397
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, accepted for publication in ApJ
Scientific paper
10.1086/427407
We report on the precise localization of the low mass X-ray binaries X1624-490 and X1702-429 with the Chandra HRC-I. We determine the best positions to be 16:28:02.825 -49:11:54.61 (J2000) and 17:06:15.314 -43:02:08.69 (J2000) for X1624-490 and X1702-429, respectively, with the nominal Chandra positional uncertainty of 0.6". We also obtained deep IR observations of the fields of these sources in an effort to identify the IR counterparts. A single, faint (Ks=18.3 +/- 0.1) source is visible inside the Chandra error circle of X1624-490, and we propose this source as its IR counterpart. For X1702-429, a Ks=16.5 +/- 0.07 source is visible at the edge of the Chandra error circle. The brightness of both counterpart candidates is comparable to that of other low mass X-ray binary IR counterparts when corrected for extinction and distance.
Alves Jose F.
Bouchet Patrice
Patel Sandeep Kumar
Smale Alan P.
Wachter Stefanie
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