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VizieR

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J/ApJS/167/1/table4 Galaxy groups and clusters from SDSS (Berlind+, 2006)
Member Galaxies of Groups and Clusters for Samples Mr20, Mr19, and Mr18 (44554 rows)
  recno=39310
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ColumnValue  Explain   (UCD)
_RAJ200009 37 44.14560 "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+02 45 38.9380 "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 35 08.42943 "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+02 59 10.6833 "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)
_Glon232.07425384 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+37.72465214 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)
39310recno 39310  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SampMr18  The R band sample (Note G1)   (src.sample)
Group 3309  Group identification number (Note 1)   (meta.id.parent)
RAJ2000144.433940 deg (i) Galaxy Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
DEJ2000+02.760816 deg (i) Galaxy Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
z 0.02420  Galaxy redshift (Note 2)   (src.redshift)
rMAG-20.625 mag Galaxy r band absolute magnitude (phys.magAbs)
g-r 0.963 mag Galaxy (g-r) color index (phot.color;em.opt.B;em.opt.R)
f_z1   [0/1] Fiber collision flag (Note 3)   (meta.code)
Redge 93.6 Mpc Perpendicular distance of galaxy from the survey edge (in h–1 Mpc) (pos.distance)

SDSSSDSS  Display the SDSS data (meta.ref.url)
  
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