SDSS DR13 Best Neighbour (gaiaedr3.sdssdr13_best_neighbour)
The table has 128130960 rows, 7 columns.
SDSS DR13 BestNeighbour table lists each matched Gaia object with itsbest neighbour in the external catalogue. The cross-match algorithm isnot symmetric and searches Gaia sources counterparts in SDSS DR13.The best neighbour is chosen among good neighbours as the one withthe highest value of the figure of merit, which evaluates the ratio be-tween two opposite models/hypotheses: the counterpart candidate is amatch or it is found by chance. Good neighbours are nearby objects inthe external catalogue whose position is compatible within position er-rors with the Gaia target.
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.
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|Dimensionless||Unique Gaia source identifier|
|clean_sdssdr13_oid||int||meta.id.cross||Dimensionless||External Catalogue source identifier|
|original_ext_source_id||long||meta.id.cross||Dimensionless||Original External Catalogue source identifier|
|angular_distance||float||pos.angDistance||Angle[arcsec]||Angular Distance between the two sources|
|number_of_neighbours||short||meta.number||Dimensionless||Number of neighbours in External Catalogue|
|number_of_mates||short||meta.number||Dimensionless||Number of mates in Gaia Catalogue|
|xm_flag||short||meta.code.status||Dimensionless||Cross-match algorithm flag|