APASS DR9 Join (gaiadr3.apassdr9_join)

The table has 61176394 rows, 2 columns.

Description

Convenience table to be used to join the APASS DR9 catalogue with the cross-match results. The table links the external catalogue original source_id (original_ex_source_id) to the corresponding additional numerical identifier (clean_apassdr9_oid). Both original_ext_source_id and clean_apassdr9_oid are present in the cross-match output tables (apassdr9_best_neighbour and apassdr9_neighbourhood). However, in case there are suspected duplicates in the external catalogue, different original_ext_source_id will correspond to the same clean_apassdr9_oid. In the cross-match output table only the original_ext_source_id of the source with the best astrometry among the suspected duplicates will be listed. In practice, users may use the original_ext_source_id in the original catalogue to find the matching source with the best astrometry. Users interested in all matching suspected duplicates should instead use the clean_apassdr9_oid 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.

Attribution

If you have used Gaia data in your research, please use the following acknowledgement:

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.

More information can be found on the credit and citation instructions page.

Columns

Name Type UCD Unit Description
original_ext_source_id long meta.id.cross Original External Catalogue source identifier
clean_apassdr9_oid integer meta.id.cross External Catalogue source identifier