The nature of the infrared counterpart of IGR J19140+0951

Details The nature of the infrared counterpart of IGR J19140+0951 The nature of the infrared counterpart of IGR J19140+0951

2007-06-08

arxiv.org/abs/0706.1129v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2007.12092.x

The INTEGRAL observatory has been (re-)discovering new X-ray sources since the beginning of nominal operations in early 2003. These sources include X-ray binaries, Active Galactic Nuclei, cataclysmic variables, etc. Amongst the X-ray binaries, the true nature of many of these sources has remained largely elusive, though they seem to make up a population of highly absorbed high-mass X-ray binaries. One of these new sources, IGR J19140+0951, was serendipitously discovered on 2003 Mar 6 during an observation of the galactic microquasar GRS 1915+105. We observed IGR J19140+0951 with UKIRT in order to identify the infrared counterpart. Here we present the H- and K-band spectra. We determined that the companion is a B0.5-type bright supergiant in a wind-fed system, at a distance $\la$ 5 kpc.

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