The GAVO Cross-Matcher Application

Details The GAVO Cross-Matcher Application The GAVO Cross-Matcher Application

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..351..695a&link_type=abstract

Astronomical Data Analysis Software and Systems XV ASP Conference Series, Vol. 351, Proceedings of the Conference Held 2-5 Octob

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The GAVO cross-matcher is a statistical multi-catalogue matcher operating on astrometric coordinates and individual associated uncertainties. A local input list of sky-positions is used for querying one or more distributed archives. The counterparts returned from cone searches in the different catalogues are combined into hypothetical ``match-candidates''. Unlikely counterpart combinations are filtered out using a reduced χ^2-metric. For all surviving match-candidates, astrometric, photometric and auxiliary information is assembled into a comprehensive match table, which can be analyzed with the help of a versatile table tool.
The GAVO cross-matcher has successfully been used in a scientific investigation, where an extremely rare type of quasar was found.

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