VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/A+A/707/A30
  Qasar pairs with Gaia astrometric data (Chen+, 2026)
ReadMe+ftp
2026A&A...707A..30C
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/707/A30/mgqpcQuasar Pair Candidates derived from the cross-match of Million Quasars catalogue (MQC) and Gaia (4112 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  System (char) Pair name designated by the center coordinates at J2000 (ICRS), JHHMMSSsss+DDMMSSsss (SystemName) (meta.id.parent)
  NameA (char) The name of pair member A retrieved from the Million Quasars catalogue (NAME) (meta.id;meta.main)
  TypeA (char) The object type of pair member A retrieved from the MQCv8 (TYPE) (src.class)
  zA  Redshift of pair member A, updated with the MQCv8 and SIMBAD (Z_A) (src.redshift;pos.heliocentric)
  seplim arcsec Cross-matching radius calculated with Z_A and 100 kpc (ec seplim) (pos.angDistance)
  GaiaDR3A  Unique Gaia DR3 identifier (source_id) of pair member A (DR3Name_A) (meta.id)
  RAA deg (i) Gaia (ICRS) at Ep=2000 right ascension of pair member A (RA_A) (pos.eq.ra;meta.main)
  DEA deg (i) Gaia (ICRS) at Ep=2000 declination of pair member A (DEC_A) (pos.eq.dec;meta.main)
  GmagA  Gaia G-band magnitude pair member A (Gmag_A) (phot.mag;em.opt)
  BPmagA  (n) Gaia BP-band magnitude pair member A (BPmag_A) (phot.mag;em.opt.B)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  RPmagA  (n) Gaia RP-band magnitude pair member A (RPmag_A) (phot.mag;em.opt.R)
  f0plxA  (n) Probability density of zero parallax calculated for pair member A (f0plxA) (stat.fit.goodness)
  f0pmA  (n) Probability density of zero proper motion calculated for pair member A (f0pmA) (stat.fit.goodness)
  GaiaDR3B  Unique Gaia DR3 identifier (source_id) of pair member B (DR3Name_B) (meta.id)
  RABdeg deg Gaia (ICRS) at Ep=2000 right ascension of pair member B (RA_B) (pos.eq.ra)
  DEBdeg deg Gaia (ICRS) at Ep=2000 declination of pair member B (DEC_B) (pos.eq.dec)
  GmagB  Gaia G-band magnitude pair member B (Gmag_B) (phot.mag;em.opt)
  BPmagB  (n) Gaia BP-band magnitude pair member B (BPmag_B) (phot.mag;em.opt.B)
  RPmagB  (n) Gaia RP-band magnitude pair member B (RPmag_B) (phot.mag;em.opt.R)
  f0plxB  Probability density of zero parallax calculated for pair member B (f0plxB) (stat.fit.goodness)
  f0pmB  Probability density of zero proper motion calculated for pair member B (f0pmB) (stat.fit.goodness)
  sepAB arcsec Angular separation between the two members in the pair (sep_AB) (pos.angDistance)
  GLONB deg Galactic longitude of pair member B (l_B) (pos.galactic.lon)
  GLATB deg Galactic latitude of pair member B (b_B) (pos.galactic.lat)
  SkyLab (char) Label of the sky region where pair member B is located (SkyLab) (Note 1)   (meta.code)
  MTypeB (char) Morphological type of pair member B retrieved from DESI-LS DR10 (MorphoType_B) (src.morph.type)
  VIClass (char) Pair classification assigned by visual Inspection (VIClass) (Note 2)   (meta.code.class)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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