Issue |
A&A
Volume 526, February 2011
|
|
---|---|---|
Article Number | A15 | |
Number of page(s) | 6 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361/201014954 | |
Published online | 14 December 2010 |
Unveiling the nature of IGR J16283−4838⋆
1
Instituto de Astronomía y Física del Espacio,
C.C. 67, Suc. 28, (1428),
Buenos Aires,
Argentina
e-mail: pellizza@iafe.uba.ar
2 Consejo Nacional de Investigaciones Científicas y Tećnicas
(CONICET), Argentina
3
Laboratoire AIM (UMR 7158 CEA/DSM-CNRS-Université Paris Diderot)
Irfu/Service d’Astrophysique, Centre de Saclay, Bât. 709, 91191
Gif-sur-Yvette Cedex,
France
Received: 7 May 2010
Accepted: 14 September 2010
Context. One of the most striking discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. The investigations of the optical/NIR counterparts of some of them have provided evidence that they are highly absorbed high mass X-ray binaries hosting supergiants.
Aims. We aim to identify the optical/NIR counterpart of one of the newly discovered INTEGRAL sources, IGR J16283−4838, and determine the nature of this system.
Methods. We present optical and NIR observations of the field of IGR J16283−4838, and use the astrometry and photometry of the sources within it to identify its counterpart. We obtain its NIR spectrum, and its optical/NIR spectral energy distribution by means of broadband photometry. We search for the intrinsic polarization of its light, and its short and long-term photometric variability.
Results. We demonstrate that this source is a highly absorbed HMXB located beyond the Galactic center, and that it may be surrounded by a variable circumstellar medium.
Key words: X-rays: binaries / X-rays: individuals: IGR J16283 / 4838
© ESO, 2010
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