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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/AJ/133/313
  AGN from RASS and SDSS DR5 (Anderson+, 2007)
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img(gal)
1.J/AJ/133/313/BLLacObserved and derived parameters of RASS/SDSS BL Lac candidates (tables 5 and 6 of paper) (266 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)
  RASS (char) RASS X-ray source name, HHMMSS.s+DDMMSS (G1) (Note)   (meta.id;meta.main)
  SDSS (char) SDSS optical counterpart name, HHMMSS.ss+DDMMSS.s (G1) (Note)   (meta.id)
  umag mag SDSS u band PSF magnitude (phot.mag;em.opt.U)
  gmag mag SDSS g band PSF magnitude (phot.mag;em.opt.B)
  rmag mag SDSS r band PSF magnitude (phot.mag;em.opt.R)
  imag mag SDSS i band PSF magnitude (phot.mag;em.opt.I)
  zmag mag SDSS z band PSF magnitude (phot.mag;em.opt.I)
  St   [3/6] SDSS imaging morphology parameter (6=stellar/unresolved, 3=extended/resolved) (src.class.starGalaxy)
  z  (n) Redshift (src.redshift)
  CRate ct/s X-ray count rate (Note 3)   (phot.count;em.X-ray)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  Exp s The X-ray exposure time (time.duration;obs.exposure;em.X-ray)
  HR1  The X-ray hardness ratio 1 (Note 4)   (phot.flux;em.X-ray;arith.ratio)
  HR2  The X-ray hardness ratio 2 (Note 4)   (phot.flux;em.X-ray;arith.ratio)
  L  The X-ray source detection likelihood (stat.likelihood)
  FX 10-16W/m2Absorbed X-ray flux (Note 5)   (phot.flux;em.X-ray)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  g0mag mag SDSS g band PSF magnitude (Note 2)   (phot.mag;em.opt.B)
  FXcor 10-16W/m2Corrected X-ray flux (Note 3)   (phot.flux;em.X-ray)
  logLX [10-7W] (n) Log of broadband (0.1-2.4kev) X-ray luminosity in units of erg/s (Note 4)   (phys.luminosity;em.X-ray)
  LogL2500 [10-7W/Hz](n) Log of 2500Å monochromatic optical luminosity in units of erg/s/Hz (Note 4)   (phys.luminosity;em.opt;arith.ratio)
  logL2keV [10-7W/Hz](n) Log of 2keV monochromatic X-ray luminosity in units of erg/s/Hz (Note 4)   (phys.luminosity;em.X-ray.soft;arith.ratio)
  alpha  Slope of a hypothetical power law from 2500Å to 2keV (spect.index)
  Comm (char) Additional comment (Note 5)   (meta.note)
  DR5  Details from SDSS-DR5 (meta.ref.url)
  _RA deg (i) Optical position (from SDSS name) (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Optical position (from SDSS name) (declination part) (pos.eq.dec;meta.main)

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