XMM SURVEY SCIENCE CENTRE SSC-CAM-TN-0003

University of Cambridge

Cambridge, CB3 OHA, UK

Likelihood ratio method for SSC XID work

Printed Tue Feb 27 19:44:33 GMT 2001 at :<10 0

• Summary
• Contents
• Introduction
• Initial matching on the basis of positional coincidence only
• Calculating likelihood ratio and reliability
  • Notation
  • Definition of likelihood ratio
    • How to estimate Q
    • Chance candidates and background density
  • Reliability
• Results for XMM / WFC matching
  • Practical evaluation of likelihood ratio and reliability
  • Results for two example fields
  • Results for merged dataset
• Discussion and future work
• References
• About this document ...
  

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  Richard McMahon
  Tue Feb 27 19:44:29 GMT 2001