Multiwavelength study of Chandra X-ray sources in the Antennae

We use Wide-field InfraRed Camera (WIRC) infrared (IR) images of the Antennae (NGC 4038/4039) together with the extensive catalogue of 120 X-ray point sources to search for counterpart candidates. Using our proven frame-tie technique, we find 38 X-ray sources with IR counterparts, almost doubling th...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2011-01, Vol.410 (2), p.890-898
Main Authors: Clark, D. M., Eikenberry, S. S., Brandl, B. R., Wilson, J. C., Carson, J. C., Henderson, C. P., Hayward, T. L., Barry, D. J., Ptak, A. F., Colbert, E. J. M.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
galaxies: star clusters: general
galaxies: starburst
Infrared imaging systems
Space telescopes
Stars & galaxies
X-ray astronomy
X-rays: binaries
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Summary:We use Wide-field InfraRed Camera (WIRC) infrared (IR) images of the Antennae (NGC 4038/4039) together with the extensive catalogue of 120 X-ray point sources to search for counterpart candidates. Using our proven frame-tie technique, we find 38 X-ray sources with IR counterparts, almost doubling the number of IR counterparts to X-ray sources that we first identified. In our photometric analysis, we consider the 35 IR counterparts that are confirmed star clusters. We show that the clusters with X-ray sources tend to be brighter, K s≈ 16 mag, with (J−K s) = 1.1 mag. We then use archival Hubble Space Telescope (HST) images of the Antennae to search for optical counterparts to the X-ray point sources. We employ our previous IR-to-X-ray frame-tie as an intermediary to establish a precise optical-to-X-ray frame-tie with
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2010.17487.x