2MASS PSC XSC Join (gaiadr3.tmass_psc_xsc_join)
The table has 471063454 rows, 3 columns.
Convenience table to be used to join 2MASS PSC+XSC catalogue with the cross-match results. The table links the external catalogue original sourceId (originalExtSourceId) to the corresponding additional numerical identifier (cleanTmassPscXscOid).Both originalExtSourceId and cleanTmassPscXscOid are present in the cross-match output tables (TmassPscXscBestNeighbour and TmassPscXscNeighbourhood). However, in case there are suspected duplicates in the external catalogue, different originalExtSourceId will correspond to the same cleanTmassPscXscOid.In the cross-match output table only the originalExtSourceId of the source with the best astrometry among the suspected duplicates will be listed. In practice, users may use the originalExtSourceId in the original catalogue to find the matching source with the best astrometry. Users interested to find all matching suspected duplicates should instead use the cleanTmassPscXscOid in the join with the cross-match result tables.See Chapter [chap:crossmatch] for more details on the duplicates in the external catalogues and their treatment in the cross-match computations.
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This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
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Original 2MASS PSC source identifier
Original 2MASS XSC source identifier
External Catalogue source identifier