Open AccessAn infrared imaging survey of the faint Chandra sources near the Galactic Centre
Author(s) -
Bandyopadhyay R. M.,
MillerJones J. C. A.,
Blundell K. M.,
Bauer F. E.,
Podsiadlowski Ph.,
Gosling A. J.,
Wang Q. D.,
Pfahl E.,
Rappaport S.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09607.x
Subject(s) - physics , astrophysics , astronomy , galaxy , acis , stars , telescope , infrared , infrared telescope , active galactic nucleus , near infrared spectroscopy , population , optics , demography , sociology
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.