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VizieR

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

  
Target dimension:

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VII/241
  The 2dF QSO Redshift Survey (Croom+ 2004)
spectrum/fits
spectrum
Post annotation
img(gal)
1.VII/241/2qz(c)2QZ catalogue: includes North and South galactic poles, and 6QZ with another 1657 lines.[spectrum/fits]
spectrum
(49425 rows)
2.VII/241/rep(c)Additional spectra when more than 2 spectra were taken[spectrum/fits] (2060 rows)
Help Xmatch is

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)2QZ (char) (i) Name of the source in 2QZ (JHHMMSS.S+DDMMSS) (meta.id;meta.main)
   (ALL)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
   (ALL)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1)intNo  Internal catalog object number (meta.id)
  (1)intName (char) Internal name of the object (meta.id)
  (1)Sector (char) Name of the sector this object inhabits (obs.field)
   (ALL)Field  UKST Survey field number (meta.id;obs.field)
  (1)Xpos pix APM scan X position (1pix=8um) (pos.cartesian.x;instr.det)
  (1)Ypos pix APM scan Y position (1pix=8um) (pos.cartesian.y;instr.det)
  (1)bJmag mag bJ magnitude (phot.mag;em.opt.B)

ALL cols
    
 (i)indexed column
  (1)u-bJ mag u-bJ colour index (phot.color;em.opt.U;em.opt.B)
  (1)bJ-r mag bJ-r colour index (Note G1)   (phot.color;em.opt.B;em.opt.R)
  (1)Nsp  Number of observations (Note 1)   (meta.number)
  (1)z1  Redshift from first spectrum (src.redshift)
  (1)q_z1  Quality flag for first spectrum (Note G3)   (meta.code.qual)
  (1)ID1 (char) Identification for first spectrum (Note G4)   (src.class)
  (1)Date1 "Y:M:D" (n) Date of observation for first spectrum (time.epoch)
  (1)Field1  field and spectrograph for first spectrum (Note G2)   (meta.note)
  (1)Fiber1  2dF fiber number (meta.note)
   (ALL)S/N1  Signal-to-noise ratio for first spectrum (Note G5)   (stat.snr)
  (1)z2  (n) Redshift from second spectrum (src.redshift)
  (1)q_z2  Quality flag for second spectrum (Note G3)   (meta.code.qual)
  (1)ID2 (char) Identification for second spectrum (Note G4)   (src.class)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Date2 "Y:M:D" (n) Date of observation for second spectrum (time.epoch)
  (1)Field2  field and spectrograph for 2nd spectrum (Note G2)   (meta.note)
  (1)Fiber2  2dF fiber number (meta.note)
  (1)S/N2  Signal-to-noise ratio for second spectrum (Note G5)   (stat.snr)
  (1)zprev  (n) Redshift if previously known (Note 2)   (src.redshift;pos.heliocentric)
  (1)F21cm mJy (n) Flux at 1.4GHz from NVSS (Note 3)   (phot.flux.density;em.radio.750-1500MHz)
  (1)FX 10-16W/m2(n) Flux at 0.1-2.4keV from RASS (Note 4)   (phot.flux;em.X-ray)
  (1)E(B-V) mag Reddening E(B-V) from Schegel et al., 1998ApJ...500..525S (phot.color.excess)
  (1)Com1 (char) Specific Comment on observation 1 (meta.note)
  (1)Com2 (char) Specific Comment on observation 2 (meta.note)
  (1)Spectra (char)
spectrum
Display the spectra, with links to FITS and postscript spectra from 2QZ data-base (meta.ref.url)
  (1)FITS (char) Get the most accurate spectrum in FITS gzipped format (meta.ref.url)
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)z  Redshift from first spectrum (src.redshift)
  (2)q_z  Quality flag for first spectrum (Note G3)   (meta.code.qual;src.redshift)
  (2)ID (char) Identification for first spectrum (Note G4)   (src.class)
  (2)Date "Y:M:D" (n) Date of observation for first spectrum (time.epoch)
  (2)Fiber  2dF fiber number (meta.id)
  (2)No   [3,6] Observation number (meta.id)
  (2)Com (char) Comment on observation (meta.note)
  (2)Sp (char) Display the spectrum
spectrum/fits
, with links to FITS and postscript spectra from 2QZ data-base (meta.ref.url)

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