VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR . Beijing (Ch) VizieR . Hawai VizieR

Catalog Selection Page

Looking for catalogs ..
Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

  
Target dimension:

Radius Box size

  
J/ApJ/658/99
 Pairs of QSO in SDSS-DR4 (Myers+, 2007)
Post annotation
img(gal)
1.J/ApJ/658/99/table1Quasar pairs in the DR4 KDE catalog with separations <0.1' (111 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)
  SDSS1 (char) First component of Quasar pair name, JHHMMSS.ss+DDMMSS.s (meta.id;meta.main)
  RAJ2000 "h:m:s" Pair1 Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" Pair1 Degree of Declination (J2000) (pos.eq.dec;meta.main)
  umag1  Pair1 SDSS u band magnitude (Note 1)   (phot.mag;em.opt.U)
  gmag1  Pair1 SDSS g band magnitude (Note 1)   (phot.mag;em.opt.B)
  zph1l  Pair1 photometric redshift range minimum (src.redshift.phot)
  zph1m  Pair1 photometric redshift range midpoint (src.redshift.phot)
  zph1u  Pair1 photometric redshift range maximum (src.redshift.phot)
  zsp1  (n) Pair1 spectroscopic redshift (src.redshift)
  f_zsp1 (char) Flag on zspec1 (Note 2)   (meta.code)

ALL cols
    
(n) indicates a possible blank or NULL column  
  zsp1b  (n) Second Pair1 spectroscopic redshift (src.redshift)
  r_zsp1b (char) [b] Reference for zspecb (Note 3)   (meta.ref;pos.frame)
  SDSS2 (char) Second component of Quasar pair name, JHHMMSS.ss+DDMMSS.s (meta.id.assoc)
  RA2 "h:m:s" Pair2 Hour of Right Ascension (J2000) (pos.eq.ra)
  DE2 "d:m:s" Pair2 Degree of Declination (J2000) (pos.eq.dec)
  umag2  Pair2 SDSS u band magnitude (Note 1)   (phot.mag;em.opt.U)
  gmag2  Pair2 SDSS g band magnitude (Note 1)   (phot.mag;em.opt.B)
  zph2l  Pair2 photometric redshift range minimum (src.redshift.phot)
  zph2m  Pair2 photometric redshift range midpoint (src.redshift.phot)
  zph2u  Pair2 photometric redshift range maximum (src.redshift.phot)
  zsp2  (n) Pair2 spectroscopic redshift (src.redshift)
  n_zsp2 (char) Note about Pair2 (Note 2)   (meta.note)
  zsp2b  (n) Pair2 alternative spectroscopic redshift (src.redshift)
  r_zsp2b (char) [b] Reference for zspec2b (Note 3)   (meta.ref;pos.frame)
  Delta arcsec Angular separation of Quasar pair (pos.angDistance)
  f_Delta (char) [*] Objects in high absorption regions (Ag>21) have a higher probability of being stars. (meta.code)
  SDSS  Display the SDSS data for the pair (from SDSS-DR6) (meta.ref.url)

ALL cols
    
(n) indicates a possible blank or NULL column  
Adapt form
Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  
elapse time 0

Thanks for acknowledging the VizieR Service
Rules of usage of VizieR data

© UDS/CNRS

Contact