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Increasing the reliability of ISOCAM cross-identifications by use of a probability pattern
2003
Astronomy and Astrophysics
The built-in play at the wheels of the ISOCAM instrument affects the accuracy of the astrometry of sources from the ISOCAM Parallel Catalogue. We present the results of different methods for cross-identifying ISOCAM sources with reference catalogues in the optical (USNO-A2.0) and in the near infrared (2MASS). For a sample of 7197 ISOCAM sources, the fraction having a real counterpart in the USNO and 2MASS catalogues was estimated to be 95% and 91% respectively. Using a nearest neighbor method
doi:10.1051/0004-6361:20030564
fatcat:532cd4czwnclbbrr5uapugdpue