VizieR

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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

  
J/AJ/137/3884
  Quasar candidates selected from the SDSS (Richards+, 2009)
ReadMe+ftp
2009AJ....137.3884R
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/137/3884/catalog(c)Quasar Candidates (tables 5 and 6 of paper) (6138 rows)
2.J/AJ/137/3884/table7(c)XMM-Newton objects in the XFLS area (23 rows)
Help Xmatch is

Simple ConstraintList Of Constraints
 
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)
  (1)Q (char) Quasars that meet the Bayesian algorithms {em(table 5)}, or meet our flux/magnitude criteria and are in {em both} the Lacy and Stern wedges {em(table 6)} (meta.note)
   (ALL)Seq  (i) [1/6138] Unique catalog number, dicS{[RDL2009] NNNN} in Simbad (meta.id;meta.main)
   (ALL)RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
   (ALL)DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  (1)SDSS (char) SDSS Name (JHHMMSS.SS+DDMMSS.S) (meta.id)
  (1)ID (char) SDSS Object ID (meta.id)
  (1)umag mag SDSS u band PSF asinh magnitude (Note 1)   (phot.mag;em.opt.U)
  (1)e_umag mag Error in umag (stat.error;phot.mag;em.opt.U)
  (1)gmag mag SDSS g band PSF asinh magnitude (Note 1)   (phot.mag;em.opt.B)
  (1)e_gmag mag Error in gmag (stat.error;phot.mag;em.opt.B)

ALL cols		    
 (i)indexed column
  (1)rmag mag SDSS r band PSF asinh magnitude (Note 1)   (phot.mag;em.opt.R)
  (1)e_rmag mag Error in rmag (stat.error;phot.mag;em.opt.R)
  (1)imag mag SDSS i band PSF asinh magnitude (Note 1)   (phot.mag;em.opt.I)
  (1)e_imag mag Error in imag (stat.error;phot.mag;em.opt.I)
  (1)zmag mag SDSS z band PSF asinh magnitude (Note 1)   (phot.mag;em.opt.I)
  (1)e_zmag mag Error in zmag (stat.error;phot.mag;em.opt.I)
  (1)F3.6 uJy Spitzer/IRAC 3.6 micron band flux density (phot.mag;em.IR.3-4um)
  (1)e_F3.6 uJy Error in F3.6 (stat.error)
  (1)F4.5 uJy Spitzer/IRAC 4.5 micron band flux density (phot.mag;em.IR.4-8um)
  (1)e_F4.5 uJy Error in F4.5 (stat.error)
  (1)F5.8 uJy Spitzer/IRAC 5.8 micron band flux density (phot.flux.density;em.IR.4-8um)
  (1)e_F5.8 uJy Error in F5.8 (stat.error)
  (1)F8.0 uJy Spitzer/IRAC 8.0 micron band flux density (phot.flux.density;em.IR.8-15um)

ALL cols		    
 (i)indexed column
  (1)e_F8.0 uJy Error in F8.0 (stat.error)
  (1)Au mag The u band Galactic extinction (Note 2)   (phys.absorption)
  (1)cl   [3/6] SDSS Morphology (6=point, 3=extended) (src.class.starGalaxy)
  (1)wL   [0/1] Lacy wedge region flag (1=in, 0=out) (meta.code)
  (1)wS   [0/1] Stern wedge region flag (1=in, 0=out) (meta.code)
  (1)wSm   [0/1] Modified Stern wedge flag (1=in, 0=out) (meta.code)
  (1)cl8   [0/1] 8-D Bayesian classification (1=in, 0=out) (meta.code.class)
  (1)cl6   [0/1] 6-D Bayesian classification (1=in, 0=out) (meta.code.class)
  (1)zph8  8-D photometric redshift (Note 5)   (src.redshift.phot)
  (1)e_zph8  Lower limit on zph8 (stat.error)
  (1)E_zph8  Upper limit on zph8 (stat.error;stat.max)
  (1)zpr8  8-D photometric redshift range probability (stat.fit.goodness)
  (1)zph6  6-D photometric redshift (Note 5)   (src.redshift.phot)

ALL cols		    
 (i)indexed column
  (1)e_zph6  Lower limit on zph6 (stat.error)
  (1)E_zph6  Upper limit on zph6 (stat.error;stat.max)
  (1)zpr6  6-D photometric redshift range probability (stat.fit.goodness)
  (1)O   [0/1] Optical selection flag (Note 6)   (meta.code)
   (ALL)P-ID (char) Previous catalog identification with morphological type (Note G1)   (meta.code;src.morph)
   (ALL)P-z  Previous catalog object redshift (src.redshift)
  (1)Sloan (char) Display the SDSS data for this quasar (meta.ref.url)
  (1)DR6 (char) Details from the SDSS-DR6 photometry (Cat. II/282) (meta.ref.url)
  (2)XName (char) Name (XHHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
  (2)Exp ks XMM-Newton exposure time (time.duration;obs.exposure)
  (2)Ftot mW/m2 (n) Total flux (phot.flux;em.X-ray)
  (2)Scts ct (n) Soft-band counts (background corrected) (phot.count;em.X-ray)
  (2)Hcts ct (n) Hard-band counts (background corrected) (phot.count;em.X-ray)
  (2)HR  (n) Hardness ratio (phot.flux;arith.ratio)
  (2)e_HR  (n) Error in HR (stat.error)

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