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Spectroscopic identication of INTEGRAL high-energy sources with VLT/ISAAC

Published online by Cambridge University Press:  30 December 2019

F. Fortin Open the ORCID record for F. Fortin [Opens in a new window] ,
S. Chaty ,
A. Coleiro ,
J. A. Tomsick  and
C. H. R. Nitschelm
F. Fortin
Affiliation:
Laboratoire AIM (UMR 7158 CEA/DRF - CNRS - Université Paris Diderot), Irfu / Département dAstrophysique, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France
S. Chaty
Affiliation:
Laboratoire AIM (UMR 7158 CEA/DRF - CNRS - Université Paris Diderot), Irfu / Département dAstrophysique, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France
A. Coleiro
Affiliation:
APC, Université Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, 10 rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, France
J. A. Tomsick
Affiliation:
Space Science Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720-7450, USA
C. H. R. Nitschelm
Affiliation:
Unidad de Astronomía, Universidad de Antofagasta, Avenida Angamos 601, Antofagasta 1270300, Chile
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Abstract

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INTEGRAL has been observing the γ-ray sky for 15 years and has discovered many high-energy sources of various nature. Among them, active galactic nuclei (AGN), low or high-mass X-ray binaries (LMXB and HMXB) and cataclysmic variables (CV) are rather difficult to differentiate from one another at high energies and require further optical or near-infrared observations to constrain their exact nature. Using near-infrared photometric and spectroscopic data from ESO VLT/ISAAC, we aim to reveal the nature of 14 high-energy INTEGRAL sources and improve the census of X-ray binaries. By comparing their spectral features to stellar spectra atlases, we identified 5 new CVs, 2 low or intermediate mass X-ray binaries, 2 HMXBs and 5 AGNs.

Keywords

infrared: starsX-rays: binariesbinaries: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S346: High-mass X-ray Binaries: Illuminating the Passage from Massive Binaries to Merging Compact Objects , August 2018 , pp. 49 - 54
Copyright
© International Astronomical Union 2019 

Footnotes

†

Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programme ID 089.D-0181(A).

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