IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Unveiling the nature of IGR J16283-4838
Autor/es:
PELLIZZA, L.J.; CHATY, S.; CHISARI, N.E.
Revista:
ASTRONOMY AND ASTROPHYSICS
Editorial:
EDP SCIENCES S A
Referencias:
Lugar: Les Ulis; Año: 2011 vol. 526 p. 1 - 6
ISSN:
0004-6361
Resumen:
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 surroundedby a variable circumstellar medium.