VizieR

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

VizieR

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/MNRAS/495/663
  Gaia DR2 OB associations (Ward+, 2020)
ReadMe+ftp
2020MNRAS.495..663W
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/495/663/tablea1(c)Association positions and sizes (109 rows)
2.J/MNRAS/495/663/tablea2Derived kinematic properties (109 rows)
3.J/MNRAS/495/663/allstarsGaia DR2 designations for all stars in sample (1775465 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)Assoc  Association ID number (Note G1)   (meta.id;meta.main)
  (1)Nstar   [40/177657] Number of stars (meta.number)
  (1)NOB  Number of OB stars (meta.number)
  (1)RAJ2000 deg (i) Mean right ascension of star association (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 deg (i) Mean declination of star association (J2000) (pos.eq.dec;meta.main)
  (1)Dist pc mean line-of-sight distance to stars (pos.distance)
  (1)s_Dist pc standard deviation of distance (stat.stdev;pos.distance)
  (1)stdX pc standard deviation in plane-of-sky position (stat.stdev;pos.distance;pos)
  (1)stdY pc standard deviation in plane-of-sky position (stat.stdev;pos.distance;pos)
  (1)stdPMX km/s standard deviation in plane-of-sky velocity (stat.stdev;phys.veloc)

ALL cols		    
 (i)indexed column
  (1)stdPMY km/s standard deviation in plane-of-sky velocity (stat.stdev;phys.veloc)
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
  (2)Nrat  Number ratio, NvR/Nvt (meta.number)
  (2)RVmed km/s Median radial velocity (spect.dopplerVeloc;stat.median)
  (2)e_RVmed km/s rms uncertainty in VRmed (stat.error)
  (2)RV/Vtmed  Median (vR/|vt|) velocity ratio (phys.veloc;arith.ratio;stat.median)
  (2)e_RV/Vtmed  rms uncertainty in VT/Vtmed (stat.error)
  (2)beta  Radial-anisotropy parameter (stat.fit.param)
  (2)e_beta  rms uncertainty in beta (stat.error)
  (2)NratOBs  Number ratio using OB star centre (meta.number)
  (2)VROBsmed km/s Median (vR) using OB star centre (spect.dopplerVeloc;stat.median)
  (2)e_VROBsmed km/s rms uncertainty in VROBsmed (stat.error)
  (2)VT/VtOBsmed  Median (vR/|vt|) using OB star centre (phys.veloc;arith.ratio;stat.median)
  (2)e_VT/VtOBsmed  rms uncertainty in VT/VtOBsmed (stat.error)
  (2)betaOBs  Radial anisotropy using OB star centre (stat.fit.param)
  (2)e_betaOBs  rms uncertainty in betaOBs (stat.error)
  (3)GaiaDR2  Gaia DR2 designation (meta.id;meta.main)

ALL cols		    
 (i)indexed column
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