Possible optical counterpart of IGR J17254-3257

Astronomy and Astrophysics – Astronomy

Scientific paper

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Optical, X-Ray, Binaries

Scientific paper

We report on archive observations of IGR J17254-3257 field made with 3.6m ESO NTT telescope at the La Silla under programme ID 079.D-0385 on Jun 23, 2007. The I-band frames show a single point source located within 2" uncertainty of x-ray source position obtained with XMM-Newton earlier (Chenevez et al. 2007, A&A, 469, L27). Its estimated coordinates and magnitude are R.A.(J2000)=17:25:24.85, DEC(J2000)=-32:57:16.5 in the 2MASS reference frame (0.2" uncertainty), I_mag = 19.1 +/- 0.5 (large error is due to the lack of precise absolute photometry in the field).

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