Unveiling the nature of IGR J16283-4838

Дата и время публикации : 2010-11-05T21:42:13Z

Авторы публикации и институты :
L. J. Pellizza (IAFE – Argentina, CONICET – Argentina)
S. Chaty (AIM – CEA Saclay – France)
N. E. Chisari (IAFE – Argentina)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 6 pages, 5 figures, accepted for publication in Astronomy & Astrophysics
Первичная категория: astro-ph.HE

Все категории : astro-ph.HE

Краткий обзор статьи: 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.

Category: Physics