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gaia data release 3 documentation

20.8 Reference frame

20.8.1 gaia_crf3_xm

This table contains the full cross-match information for the Gaia-CRF3 sources. The Gaia-CRF3 sources were selected from the cross-matches with 17 external QSO catalogues as detailed below (three of which are parts of ICRF3 described in the first paper). For each Gaia-CRF3 source the information in which external catalogue this source was found and which name(s) this source has in those external catalogues is provided. The table allows the user to get all sources from an external catalogue that are in Gaia-CRF3.
The external catalogues from which the Gaia-CRF3 sources were compiled are:

  • The third realization of the International Celestial Reference Frame by very long baseline interferometry (Charlot et al. 2020)

  • A New Version of the OCARS Catalogue of Optical Characteristics of Astrometric Radio Sources (Malkin 2018) (the catalogue downloaded from http://www.gaoran.ru/english/as/ac_vlbi/#OCARS on 17 June 2020)

  • Identification of 1.4 Million Active Galactic Nuclei in the Mid-Infrared using WISE Data (Secrest et al. 2015)

  • The WISE AGN Catalogue (Assef et al. 2018)

  • The Million Quasars (Milliquas) Catalogue, v6.4 (Flesch 2019) with the v6.5 (2020) update

  • The Sloan Digital Sky Survey Quasar Catalogue: Fourteenth data release (Pâris et al. 2018)

  • LQAC-5: The fifth release of the Large Quasar Astrometric Catalogue. A compilation of 592 809 objects with 398 697 Gaia counterparts (Souchay et al. 2019)

  • The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: The Fourth and Fifth Data Releases (Yao et al. 2019) – see also https://nadc.china-vo.org/data/article/20190107155838

  • The large quasar reference frame (LQRF). An optical representation of the ICRS (Andrei et al. 2009)

  • The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function (Croom et al. 2004)

  • The 5th edition of the Roma-BZCAT (Massaro et al. 2015)

  • 2WHSP: A multi-frequency selected catalogue of high energy and very high energy γ-ray blazars and blazar candidates (Chang et al. 2017)

  • ALMA photometry of extragalactic radio sources (Bonato et al. 2019)

  • Catalogues of active galactic nuclei from Gaia and unWISE data (Shu et al. 2019)

  • Quasar and galaxy classification in Gaia Data Release 2 (Bailer-Jones et al. 2019)


Columns description:

solution_id : Solution Identifier (long)

All Gaia data processed by the Data Processing and Analysis Consortium comes tagged with a solution identifier. This is a numeric field attached to each table row that can be used to unequivocally identify the version of all the subsystems that were used in the generation of the data as well as the input data used. It is mainly for internal DPAC use but is included in the published data releases to enable end users to examine the provenance of processed data products. To decode a given solution ID visit https://gaia.esac.esa.int/decoder/solnDecoder.jsp

source_id : Gaia source identifier (long)

A unique single numerical identifier of the source obtained from gaia_source (for a detailed description see gaia_source.source_id).

icrf3sx : The flag describing if the Gaia-CRF3 source was found in ICRF3 S/X (boolean)

The flag describing if the Gaia-CRF3 source was found in ICRF3 S/X (Charlot et al. 2020).

icrf3k : The flag describing if the Gaia-CRF3 source was found in ICRF3 K (boolean)

The flag describing if the Gaia-CRF3 source was found in ICRF3 K (Charlot et al. 2020).

icrf3xka : The flag describing if the Gaia-CRF3 source was found in ICRF3 X/Ka (boolean)

The flag describing if the Gaia-CRF3 source was found in ICRF3 X/Ka (Charlot et al. 2020).

icrf_name : The ICRF name of the source (string)

The ICRF name for this source (Charlot et al. 2020).

iers_name : The IERS name of the source (string)

The IERS name for this source (Charlot et al. 2020).

ocars : The flag describing if the Gaia-CRF3 source was found in OCARS (boolean)

The flag describing if the Gaia-CRF3 source was found in OCARS (Malkin 2018).

ocars_name : The name for this source in OCARS (string)

The name for this source in OCARS (Malkin 2018) – the catalogue downloaded from http://www.gaoran.ru/english/as/ac_vlbi/#OCARS on 19 June 2020.

aw15 : The flag describing if the Gaia-CRF3 source was found in allWISE (boolean)

The flag describing if the Gaia-CRF3 source was found in AllWISE (Secrest et al. 2015).

aw15_name : The name for this source in allWISE (string)

The name for this source in AllWISE (Secrest et al. 2015).

r90 : The flag describing if the Gaia-CRF3 source was found in the catalogue R90 (boolean)

The flag describing if the Gaia-CRF3 source was found in the catalogue R90 (Assef et al. 2018).

r90_name : The name for this source in R90 (string)

The name for this source in R90 (Assef et al. 2018).

m65 : The flag describing if the Gaia-CRF3 source was found in Milliquas v6.5 (boolean)

The flag describing if the Gaia-CRF3 source was found in Milliquas (Flesch 2019) v6.5 (2020) update.

m65_name : The name for this source in Milliquas v6.5 (string)

The name for this source in Milliquas (Flesch 2019) v6.5 (2020) update.

c75 : The flag describing if the Gaia-CRF3 source was found in the catalogue C75 (boolean)

The flag describing if the Gaia-CRF3 source was found in the catalogue C75 (Assef et al. 2018).

c75_name : The name for this source in C75 (string)

The name for this source in C75 (Assef et al. 2018).

dr14q : The flag describing if the Gaia-CRF3 source was found in the catalogue SDSS DR14Q (boolean)

The flag describing if the Gaia-CRF3 source was found in SDSS DR14Q (Pâris et al. 2018).

dr14q_name : The name for this source in SDSS DR14Q (string)

The name for this source in SDSS DR14Q (Pâris et al. 2018).

lqac5 : The flag describing if the Gaia-CRF3 source was found in LQAC-5 (boolean)

The flag describing if the Gaia-CRF3 source was found in LQAC-5 (Souchay et al. 2019).

lqac5_name : The name for this source in LQAC-5 (string)

The name for this source in LQAC-5 (Souchay et al. 2019).

lamost5 : The flag describing if the Gaia-CRF3 source was found in the LAMOST QSO catalogue (boolean)

The flag describing if the Gaia-CRF3 source was found in the LAMOST QSO catalogue (Yao et al. 2019); https://nadc.china-vo.org/data/article/20190107155838

lamost5_name : The name for this source in the LAMOST QSO catalogue (string)

The name for this source in the LAMOST QSO catalogue (Yao et al. 2019); https://nadc.china-vo.org/data/article/20190107155838

lqrf : The flag describing if the Gaia-CRF3 source was found in LQRF (boolean)

The flag describing if the Gaia-CRF3 source was found in LQRF (Andrei et al. 2009).

lqrf_name : The name for this source in LQRF (string)

The name for this source in LQRF (Andrei et al. 2009).

cat2qz : The flag describing if the Gaia-CRF3 source was found in 2QZ (boolean)

The flag describing if the Gaia-CRF3 source was found in 2QZ (Croom et al. 2004).

cat2qz_name : The name for this source in 2QZ (string)

The name for this source in 2QZ (Croom et al. 2004).

bzcat5 : The flag describing if the Gaia-CRF3 source was found in Roma-BZCAT, v5 (boolean)

The flag describing if the Gaia-CRF3 source was found in Roma-BZCAT, v5 (Massaro et al. 2015).

bzcat5_name : The name for this source in Roma-BZCAT, v5 (string)

The name for this source in Roma-BZCAT, v5 (Massaro et al. 2015).

cat2whspj : The flag describing if the Gaia-CRF3 source was found in 2WHSPJ (boolean)

The flag describing if the Gaia-CRF3 source was found in 2WHSPJ (Chang et al. 2017).

cat2whspj_name : The name for this source in 2WHSPJ (string)

The name for this source in 2WHSPJ (Chang et al. 2017).

alma19 : The flag describing if the Gaia-CRF3 source was found in the ALMA calibrator catalogue (boolean)

The flag describing if the Gaia-CRF3 source was found in the ALMA calibrator catalogue (Bonato et al. 2019).

alma19_name : The name for this source in the ALMA calibrator catalogue (string)

The name for this source in the ALMA calibrator catalogue (Bonato et al. 2019).

guw : The flag describing if the Gaia-CRF3 source was found in Gaia-unWISE (boolean)

The flag describing if the Gaia-CRF3 source was found in Gaia-unWISE (Shu et al. 2019).

guw_name : The name for this source in Gaia-unWISE (string)

The name for this source in Gaia-unWISE (Shu et al. 2019).

b19 : The flag describing if the Gaia-CRF3 source was found in the Gaia DR2 quasar and galaxy classification catalogue (boolean)

The flag describing if the Gaia-CRF3 source was found in the Gaia DR2 quasar and galaxy classification catalogue (Bailer-Jones et al. 2019).

b19_name : The name for this source in the Gaia DR2 quasar and galaxy classification catalogue (string)

The name for this source in the Gaia DR2 quasar and galaxy classification catalogue (Bailer-Jones et al. 2019).