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/ApJ/655/790
  Groups of galaxies in 2MASS survey (Crook+, 2007)
ReadMe+ftp
2007ApJ...655..790C
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/655/790/groupsCatalog of Groups in the 2MASS Redshift Survey (Low-density-contrast + High-density-contrast, tables 6 and 7 of paper) (Note) (2865 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)
  n_Group (char) L for Low-density-contrast group, or H for High-density-contrast group (meta.id.part;meta.main)
  Group  Group number (Note 1)   (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
  Nm  Number of members in Group (Note 2)   (meta.number)
  NmS  Number of simulated members in Group (meta.number)
  Dist Mpc Mean (corrected) group distance, assuming h=0.73 (pos.distance;pos.heliocentric)
  HV km/s Mean heliocentric group velocity (spect.dopplerVeloc;stat.mean)
  sigma km/s Line-of-sight velocity dispersion (phys.veloc.dispersion)
  Rp Mpc Projected virial radius (phys.size.radius)
  logM [solMass]Log of the virial mass (phys.mass)
  logMp [solMass]Log of the projected mass (phys.mass)
  logM/L [solMass/solLum]Log of projected mass-to-light ratio (phys.luminosity)
  a arcmin Semi-major axis of the ellipse fit (Note 3)   (phys.angSize.smajAxis;meta.modelled)
  b/a  (n) Axis ratio of group ellipse fit (phys.angSize;arith.ratio)
  PA deg (n) Semi-major axis position angle (Note 4)   (phys.angSize.smajAxis)
  LDC  (n) LDC catalog group number that includes all members of this group (for table7.dat only) (meta.id)

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