191 research outputs found
The nature of the infrared counterpart of IGR J19140+0951
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.Comment: 5 pages, 2 figures, accepted for publication in MNRA
Discovery of a new INTEGRAL source: IGR J19140+0951
IGR J19140+0951 (formerly known as IGR J19140+098) was discovered with the
INTEGRAL satellite in March 2003. We report the details of the discovery, using
an improved position for the analysis. We have performed a simultaneous study
of the 5-100 keV JEM-X and ISGRI spectra from which we can distinguish two
different states. From the results of our analysis we propose that IGR
J19140+0951 is a persistent Galactic X-ray binary, probably hosting a neutron
star although a black hole cannot be completely ruled out.Comment: 4 pages, 4 figures. Accepted for publication in A&A
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