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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
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)2QZ (char) (i) Name of the source in 2QZ (JHHMMSS.S+DDMMSS) (meta.id;meta.main)
  (1)bJmag mag bJ magnitude (phot.mag;em.opt.B)
  (1)bJ-r mag bJ-r colour index (Note G1)   (phot.color;em.opt.B;em.opt.R)
  (1)Com1 (char) Specific Comment on observation 1 (meta.note)
  (1)Com2 (char) Specific Comment on observation 2 (meta.note)
  (1)Date1 "Y:M:D" (n) Date of observation for first spectrum (time.epoch)
  (1)Date2 "Y:M:D" (n) Date of observation for second spectrum (time.epoch)
   (ALL)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1)E(B-V) mag Reddening E(B-V) from Schegel et al., 1998ApJ...500..525S (phot.color.excess)
  (1)F21cm mJy (n) Flux at 1.4GHz from NVSS (Note 3)   (phot.flux.density;em.radio.750-1500MHz)
  (1)Fiber1  2dF fiber number (meta.note)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Fiber2  2dF fiber number (meta.note)
   (ALL)Field  UKST Survey field number (meta.id;obs.field)
  (1)Field1  field and spectrograph for first spectrum (Note G2)   (meta.note)
  (1)Field2  field and spectrograph for 2nd spectrum (Note G2)   (meta.note)
  (1)FITS (char) Get the most accurate spectrum in FITS gzipped format (meta.ref.url)
  (1)FX 10-16W/m2(n) Flux at 0.1-2.4keV from RASS (Note 4)   (phot.flux;em.X-ray)
  (1)ID1 (char) Identification for first spectrum (Note G4)   (src.class)
  (1)ID2 (char) Identification for second spectrum (Note G4)   (src.class)
  (1)intName (char) Internal name of the object (meta.id)
  (1)intNo  Internal catalog object number (meta.id)
  (1)Nsp  Number of observations (Note 1)   (meta.number)
  (1)q_z1  Quality flag for first spectrum (Note G3)   (meta.code.qual)
  (1)q_z2  Quality flag for second spectrum (Note G3)   (meta.code.qual)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)Sector (char) Name of the sector this object inhabits (obs.field)
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
   (ALL)S/N1  Signal-to-noise ratio for first spectrum (Note G5)   (stat.snr)
  (1)S/N2  Signal-to-noise ratio for second spectrum (Note G5)   (stat.snr)
  (1)Spectra (char)
spectrum
Display the spectra, with links to FITS and postscript spectra from 2QZ data-base (meta.ref.url)
  (1)u-bJ mag u-bJ colour index (phot.color;em.opt.U;em.opt.B)
  (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)z1  Redshift from first spectrum (src.redshift)
  (1)z2  (n) Redshift from second spectrum (src.redshift)
  (1)zprev  (n) Redshift if previously known (Note 2)   (src.redshift;pos.heliocentric)

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

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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