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[26.07] Optical Identification of X-ray Sources in the ChaMP Survey

R.A. Cameron, D.C. Morris, P.J. Green, A.E. Mossman, A. Dosaj, S.N. Virani, D.-W. Kim, B.J. Wilkes, H.D. Tananbaum (Harvard-Smithsonian CfA), ChaMP Collaboration

We describe the methods being developed and used to provide optical identifications and astrometric and photometric data for X-ray sources detected in the Chandra Multiwavelength Project (ChaMP). We present results for the background X-ray sources detected in three target fields observed by Chandra: the clusters of galaxies MS 1137.5+6625, MS 1621.5+2640 and MS 2053.7-0449. Multi-band CCD data are tied to the International Celestial Reference System and photometrically calibrated via USNO-A2 cross-identifications in the optical datasets for each field. Techniques for crowded-field source separation are discussed. The problems and reliability of identification of off-axis X-ray sources are discussed.

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The author(s) of this abstract have provided an email address for comments about the abstract: rcameron@cfa.harvard.edu