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J/MNRAS/372/425
 2dF-SDSS Luminous Red Galaxy Survey, 2SLAQ (Cannon+, 2006)
ReadMe+ftp
2006MNRAS.372..425C
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This catalogue is obsoleted by J/MNRAS/392/19
Post annotation 		img(gal)
1.J/MNRAS/372/425/catalogThe 2SLAQ redshift catalogue (14978 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)
  2SLAQ (char) Object name, (JHHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
  RAJ2000 "h:m:s" Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" Declination (J2000) (pos.eq.dec;meta.main)
  Rmag mag Expected r-band fibre magnitude (Note 1)   (phot.mag;em.opt.R)
  tSp  Template spectrum used for best cross-correlation redshift (Note 2)   (meta.code)
  xcor  Cross-correlation (rx) parameter (Note 3)   (stat.snr)
  zabs  Absorption line redshift from best cross-correlation (src.redshift)
  q_zabs  Quality of auto redshift assessed by Zcode, after checking for emission lines (Note 4)   (meta.code.qual)
  q_xcor   [0/4] Quality of automatic xcorr redshift, as estimated by Zcode. (4 is best, 0 is useless) (meta.code.qual)
  z  Redshift finally adopted (= zabs unless manually modified) (src.redshift)

ALL cols		    
   
  q_z  Redshift quality adopted (= q_zabs unless manually modified by observer) (Note 5)   (meta.code.qual;src.redshift)
  f_z   [0/3] A flag indicating manual intervention (Note 6)   (meta.code)
  Field (char) 2dF field number. Format LNN, where L is a letter a-e for northern (Galactic) fields and L=s for the southern strip (meta.id;obs.field)
  Fiber  2dF fibre number (Note 7)   (meta.note)
  Date (char) 6-character identifier for the 2dF data set from which the spectrum was taken "DDMMYY" (Note 8)   (time.epoch)
  CCD   [2] Identifier of CCD and 2dF spectrograph. Always 2 for LRGs (spectrograph 1 was used for the QSOs) (meta.id)
  2dF   [0/1] Field plate identifier (obs.field)
  Xpos um X position of object within 2dF field, in microns from the centre of the plate (Note 9)   (pos.cartesian.x;obs.field)
  Ypos um Y position of object within 2dF field, in microns from the centre of the plate (Note 9)   (pos.cartesian.y;obs.field)
  S/N  Average signal-to-noise ratio of spectrum (Note 10)   (stat.snr;stat.mean)
  xpmag mag (n) Magnitude derived from spectrum (Note 11)   (phot.mag;em.opt.R)
  Vmag mag (n) Spectral magnitude from counts over range 515-595nm, approximately the V photometric band (starting at 523nm for March 2003 data). (phot.mag;em.opt.V)
  rmag mag (n) Spectral magnitude over range 595-680nm, i.e. ∼ r-band. (phot.mag;em.opt.R)
  Pry  Priority flag (Note 13)   (meta.code)
  i(dev) mag SDSS extinction-corrected i-band 'de Vaucouleurs' magnitude (Note 14)   (phot.mag;em.opt.I)
  g-r mag SDSS reddening-corrected (g-r) 'ModelMag' colour index (Note 14)   (phot.color;em.opt.B;em.opt.R)
  r-i mag SDSS reddening-corrected (r-i) 'ModelMag' colour index (Note 14)   (phot.color;em.opt.R;em.opt.I)
  Ar mag SDSS absorption in the r-band (Note 14)   (phys.absorption)
  PryO  (n) Original 2SLAQ priority number (meta.code)
  NameOri (char) Original 2SLAQ 18-character object name used in 2003, blank for later data (Note 15)   (meta.id)
  Com (char) Comments. Mostly copied from Zcode output. Most often blank (meta.note)
  SDSSdata  Display the SDSS data for this galaxy (meta.ref.url)

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