An infrared imaging survey of the faint Chandra sources near the Galactic Centre

We present near-infrared imaging of a sample of the faint, hard X-ray sources discovered in the 2001 Chandra Advanced CCD Imaging Spectrometer (ACIS)-I survey towards the Galactic Centre (GC) by Wang et al. These ∼800 discrete sources represent an important and previously undetected population withi...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2005-12, Vol.364 (4), p.1195-1202
Main Authors: Bandyopadhyay, R. M., Miller-Jones, J. C. A., Blundell, K. M., Bauer, F. E., Podsiadlowski, Ph, Gosling, A. J., Wang, Q. D., Pfahl, E., Rappaport, S.
Format: Article
Language:English
Subjects:
Astronomy
binaries: close
Earth, ocean, space
Exact sciences and technology
Infrared imaging systems
infrared: stars
Stars & galaxies
stars: mass-loss
Telescopes
X-ray astronomy
X-rays: stars
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Summary:We present near-infrared imaging of a sample of the faint, hard X-ray sources discovered in the 2001 Chandra Advanced CCD Imaging Spectrometer (ACIS)-I survey towards the Galactic Centre (GC) by Wang et al. These ∼800 discrete sources represent an important and previously undetected population within the Galaxy. From our Very Large Telescope observations of 77 X-ray sources, we identify candidate K-band counterparts to 75 per cent of the Chandra sources in our sample. The near-infrared magnitudes and colours of the majority of candidate counterparts are consistent with highly reddened stars, indicating that most of the Chandra sources are likely to be accreting binaries at or near the GC.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2005.09607.x