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

  
J/MNRAS/549/G853
  A new Gaia census of OB associations (Quintana+, 2026)
ReadMe+ftp
2026MNRAS.549g.853Q
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/549/G853/table1Main catalogue (56 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)
  Name (char) Assigned OB association name (Name) (meta.id;meta.main)
  AName (char) Alternative name for the OB association (Alternative name) (meta.id)
  ID  ID assigned to the OB association, ordered by increasing median line (ID) (meta.id)
  N  Number of identified members (N) (meta.number)
  RA_ICRS deg (i) Median right ascension (ICRS) at Ep=2016.0 (RA_ICRS) (pos.eq.ra;meta.main)
  DE_ICRS deg (i) Median declination (ICRS) at Ep=2016.0 (DE_ICRS) (pos.eq.dec;meta.main)
  GLON deg Median Galactic longitude (GLON) (pos.galactic.lon)
  GLAT deg Median Galactic latitude (GLAT) (pos.galactic.lat)
  AV mag Median extinction in the V-band (AV) (phys.absorption)
  d pc Median SED-fitted line-of-sight distance (d) (pos.distance)

ALL cols		    
 (i)indexed column
  X pc Median X coordinate in heliocentric Cartesian Galactic coordinates (X) (pos.cartesian.x;stat.median)
  s_X pc Intrinsic dispersion in the X direction (Sigma_X) (instr.dispersion)
  Y pc Median Y coordinate in heliocentric Cartesian Galactic coordinates (Y) (pos.cartesian.y;stat.median)
  s_Y pc Intrinsic dispersion in the Y direction (Sigma_Y) (instr.dispersion)
  Z pc Median Z coordinate in heliocentric Cartesian Galactic coordinates (Z) (pos.cartesian.z;stat.median)
  s_Z pc Intrinsic dispersion in the Z direction (Sigma_Z) (instr.dispersion)
  Vl km/s Median transverse velocity in Galactic longitude (V_l) (phys.veloc)
  s_Vl km/s Intrinsic dispersion in transverse velocity in Galactic longitude (Sigma_Vl) (stat.error)
  Vb km/s Median transverse velocity in Galactic latitude (V_b) (phys.veloc)
  s_Vb km/s Intrinsic dispersion in transverse velocity in Galactic latitude (Sigma_Vb) (stat.error)
  kappal km/s/pc Linear velocity gradient in Galactic longitude (Kappa_l) (arith.grad;phys.veloc)
  e_kappal km/s/pc Error on linear velocity gradient in Galactic longitude (Errkappal) (stat.error)
  Agekinl Myr (n) Linear kinematic age in Galactic longitude (Age_kin,l) (pos.distance;pos.galactic.lon)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  e_Agekinl Myr (n) Error on linear kinematic age in Galactic longitude (ErrAgekin,l) (stat.error)
  kappab km/s/pc Linear velocity gradient in Galactic latitude (Kappa_b) (arith.grad;phys.veloc)
  e_kappab km/s/pc Error on linear velocity gradient in Galactic latitude (ErrKappab) (stat.error)
  Agekinb Myr (n) Linear kinematic age in Galactic latitude (Age_kin,b) (pos.distance;pos.galactic.lat)
  e_Agekinb Myr (n) Error on linear kinematic age in Galactic latitude (ErrAgekin,b) (stat.error)
  NO  Estimated median number of systems containing a O-type star in the O (N_O) (meta.number)
  e_NO  Lower error on NO, 16th percentile (NOP16) (stat.error)
  E_NO  Upper error on NO, 84th percentile (NOP84) (stat.error;stat.max)
  NB  Estimated median number of systems containing a B-type star in the O (N_B) (meta.number)
  e_NB  Lower error on NBP, 16th percentile (NBP16) (stat.error)
  E_NB  Upper error on NBP, 84th percentile (NBP84) (stat.error;stat.max)
  Mtot Msun Estimated median total stellar initial mass (M_tot) (phys.mass;stat.median)
  e_Mtot Msun Lower error on Mtot, 16th percentile (MtotP16) (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  E_Mtot Msun Upper error on Mtot, 84th percentile (MtotP84) (stat.error;stat.max)
  Agemax Myr Estimated maximum isochronal age from the hottest member (Age_max) (time.age;stat.max)
  NC  Number of crossmatched members with the OCs from Hunt & Reffert (2024, Cat. J/A+A/686/A42 (N_OC) (meta.number)
  RelOCsAge (char) Myr Age range of the overlapping OCs from Hunt & Reffert (2024, Cat. J/A+A/686/A42) (Related OCs age) (time.age)
  RelOCs (char) Crossmatched OCs from Hunt & Reffert (2024, Cat. J/A+A/686/A42) (Related OCs) (meta.id)
  NG  Number of crossmatched members with the stellar groups from Kounkel (N_G) (meta.number)
  RelGrAge (char) Myr Age range of the overlapping stellar groups from Kounkel et al. (2020, Cat. J/AJ/160/279) (Related groups age) (time.age)
  RelGr (char) Crossmatched groups from Kounkel et al. (2020, Cat. J/AJ/160/279) (Related groups) (meta.id)
  AssSCL (char) Spatially related supercloud from Kormann et al. (2026A&A...706A.161K) (Associated supercloud) (meta.id)

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