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Catalog Selection Page

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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/A+A/474/783
 Main galaxy groups from SDSS-DR5 (Deng+, 2007)
Post annotation
img(gal)
1.J/A+A/474/783/table2The group catalog identified using the linking length b=0.2 (11163 rows)

 
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)
  Seq  Sequential number (meta.record)
  Rich  Group richness (src.class.richness)
  RAJ2000 deg Group centroid Right ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg Group centroid Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  z  Mean redshift of the group (src.redshift)
  sigma km/s Line-of-sight velocity dispersion of the group (phys.veloc.dispersion;pos.lg)
  Rad Mpc Virial radius of the group (phys.size.radius;pos.lg)
  Mass solMass Virial mass of the group (phys.mass;pos.lg)
  tcr  Crossing time of the group, in units of 1/H0 (time.epoch;pos.lg)

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