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J/ApJ/655/790/groups Groups of galaxies in 2MASS survey (Crook+, 2007)
Catalog of Groups in the 2MASS Redshift Survey (Low-density-contrast + High-density-contrast, tables 6 and 7 of paper) (2865 rows)
  Group=720, n_Group=H
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200012 29 03.500 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+10 23 36.00 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195012 26 31.237 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+10 40 10.59 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon284.384200 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+72.454324 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
2324recno 2324  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
n_GroupH  L for Low-density-contrast group, or H for High-density-contrast group (meta.id.part;meta.main)

Group 720  Group number (Note 1)   (meta.id;meta.main)
RAJ200012 29 03.5 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+10 23 36 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
Nm205  Number of members in Group (Note 2)   (meta.number)
NmS 0  Number of simulated members in Group (meta.number)
Dist 19.93 Mpc Mean (corrected) group distance, assuming h=0.73 (pos.distance;pos.heliocentric)
HV 1389 km/s Mean heliocentric group velocity (spect.dopplerVeloc;stat.mean)
sigma 659.5 km/s Line-of-sight velocity dispersion (phys.veloc.dispersion)
Rp 2.10 Mpc Projected virial radius (phys.size.radius)
logM15.000 [solMass] Log of the virial mass (phys.mass)
logMp15.149 [solMass] Log of the projected mass (phys.mass)
logM/L 2.234 [solMass/solLum]Log of projected mass-to-light ratio (phys.luminosity)
a 305 arcmin Semi-major axis of the ellipse fit (Note 3)   (phys.angSize.smajAxis;meta.modelled)
b/a 0.41   Axis ratio of group ellipse fit (phys.angSize;arith.ratio)
PA 6 deg Semi-major axis position angle (Note 4)   (phys.angSize.smajAxis)
LDC 904   LDC catalog group number that includes all members of this group (for table7.dat only) (meta.id)
  
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