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VizieR

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J/A+A/479/927/groups Group of galaxies in SDSS 5 (Tago+, 2008)
Groups of galaxies (tables 3a and 3b of paper, dr5Egr + dr5Ngr) (50362 rows)
  Group= 4749, F=N
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200009 18 36.174 "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+50 00 45.36 "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)
_RAB195009 15 10.220 "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+50 13 23.96 "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)
_Glon168.393196 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+43.780216 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)
21892recno 21892  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
FN  E or N groups (required to identify a group) (obs.field)

Group 4749  (i) Group identification number (meta.id;meta.main)
Ngal 5  Richness (number of member galaxies) (linked to galaxies in the group) (src.class.richness)
RAJ2000139.6507 deg (i) Right Ascension in decimal degrees, J2000 (mean of member galaxies) (pos.eq.ra;meta.main)
DEJ2000+50.0126 deg (i) Declination in decimal degrees, J2000 (mean of member galaxies) (pos.eq.dec;meta.main)
Dist 103.91 Mpc Comoving distance (mean of member galaxies corrected for CMB), in Mpc/h (pos.distance)
Size 0.9032 Mpc Maximum projected linear size, in Mpc/h (phys.size)
sigma 88.84 km/s rms radial velocity (velocity dispersion) (stat.stdev;spect.dopplerVeloc)
Rvir0.3984 Mpc Virial radius (projected harmonic mean), in Mpc/h (phys.size.radius)
Lmain 0.7309 10+10solLum Luminosity of main galaxy (Note 1)   (phys.luminosity)
LgrObs 1.468 10+10solLum Observed total group luminosity (Note 1)   (phys.luminosity)
LgrEst 2.569 10+10solLum Estimated total group luminosity (Note 1)   (phys.luminosity)
  
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