Tycho-2 TDSC Merge Neighbourhood (gaiaedr3.tycho2tdsc_merge_neighbourhood)
The table has 2536896 rows, 6 columns.
Description
Tycho2TDSCmerge Neighbourhood table includes all good neighboursfor each matched Tycho2TDSCmerge object. A good neighbour for agiven Tycho2TDSCmerge source is a nearby Gaia object whose positionis compatible (within position errors) with the Tycho2TDSCmerge target.
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 |
|---|---|---|---|---|
| source_id | long |
meta.id meta.main |
Dimensionless | Unique Gaia source identifier |
| original_ext_source_id | char | meta.id.cross | Dimensionless | Original External Catalogue source identifier |
| angular_distance | float | pos.angDistance | Angle[arcsec] | Angular Distance between the two sources |
| score | double | meta.code | Dimensionless | Score of neighbours |
| xm_flag | short | meta.code.status | Dimensionless | Cross-match algorithm flag |
| tycho2tdsc_merge_oid | int | meta.id.cross | Dimensionless | External Catalogue source identifier |