Table information for 'alerce_tap.ztf_gaia'

General

Table Description:

Cross-match of ZTF objects to Gaia DR1 catalog sources within 90 arcsec, providing distances and G-band magnitudes for the nearest source and nearest bright source (G < 14 mag).

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

Multi-survey astronomical object catalog containing astrometric and statistical information from multiple surveys. This table provides aggregated properties for astronomical objects including position, detection statistics, and temporal coverage.

For a list of all services and tables belonging to this table's resource, see Information on resource 'ALeRCE Multi-Survey Object Catalog'

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:alerce_tap_ztf_g,
  year=2026,
  title={{ZTF}-Gaia Cross-Match},
  author={{ALeRCE} Team},
  url={http://tap.alerce.online/tableinfo/alerce_tap.ztf_gaia},
  howpublished={{VO} resource provided by the {ALeRCE} {TAP} service}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
oid Oid Unique identifier for this object N/A meta.id;src
measurement_id Measurement_id Unique identifier for the subtraction candidate N/A meta.id
neargaia Neargaia Distance to closest source from Gaia DR1 catalog irrespective of magnitude, if exists within 90 arcsec arcsec pos.angDistance
neargaiabright Neargaiabright Distance to closest source from Gaia DR1 catalog brighter than magnitude 14, if exists within 90 arcsec arcsec pos.angDistance
maggaia Maggaia Gaia (G-band) magnitude of closest source from Gaia DR1 catalog irrespective of magnitude, if exists within 90 arcsec mag phot.mag;em.opt
maggaiabright Maggaiabright Gaia (G-band) magnitude of closest source from Gaia DR1 catalog brighter than magnitude 14, if exists within 90 arcsec mag phot.mag;em.opt
created_date Created_date Date record was created N/A time.creation

Columns that are parts of indices are marked like this.

VOResource

VO nerds may sometimes need VOResource XML for this table.