VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/AJ/138/845
  BVRI observations of 235 bright quasars (Ojha+, 2009)
ReadMe+ftp
2009AJ....138..845O
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/138/845/table2Magnitudes of Space Interferometry Mission (SIM) candidate quasars (390 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_Name (char) * indicates the QSOs which name does not exist in the Véron+Véron Catalog 2006 (Cat. VII/248); the position may therefore refer to a bad object (meta.note)
  Name (char) Source J2000.0 name (HHMM+DDd) (meta.id;meta.main)
  <Bmag> mag (n) Mean B band magnitude (phot.mag;em.opt.B)
  e_<Bmag> mag (n) Standard deviation in <Bmag> (stat.error;phot.mag;em.opt.B)
  o_<Bmag>  Number of observations in <Bmag> (meta.number)
  <Vmag> mag (n) Mean V band magnitude (phot.mag;em.opt.V)
  e_<Vmag> mag (n) Standard deviation in <Vmag> (stat.error;phot.mag;em.opt.V)
  o_<Vmag>  Number of observations in <Vmag> (meta.number)
  <Rmag> mag (n) Mean R band magnitude (phot.mag;em.opt.R)
  e_<Rmag> mag (n) Standard deviation in <Rmag> (stat.error;phot.mag;em.opt.R)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  o_<Rmag>  Number of observations in <Rmag> (meta.number)
  <Imag> mag (n) Mean I band magnitude (phot.mag;em.opt.I)
  e_<Imag> mag (n) Standard deviation in <Imag> (stat.error;phot.mag;em.opt.I)
  o_<Imag>  Number of observations in <Imag> (meta.number)
  B-V mag (n) The (B-V) color index (phot.color;em.opt.B;em.opt.V)
  V-R mag (n) The (V-R) color index (phot.color;em.opt.V;em.opt.R)
  R-I mag (n) The (R-I) color index (phot.color;em.opt.R;em.opt.I)
  V-I mag (n) The (V-I) color index (phot.color;em.opt.V;em.opt.I)
  Epoch (char) Epoch label (Note 1)   (meta.id;time.epoch)
  SimbadName (char) Designation understandable by the Simbad data-base (meta.id)
  _RA deg (n)(i) Position from Véron+Véron Catalog 2006 (Cat. VII/248); in several cases, no QSO corresponds to the name given (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (n)(i) Position from Véron+Véron Catalog 2006 (Cat. VII/248); in several cases, no QSO corresponds to the name given (declination part) (pos.eq.dec;meta.main)

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