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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

  Properties of weak emission-line QSOs (WLQ) (Shemmer+, 2009)
Post annotation
1.J/ApJ/696/580/wlqsX-ray, optical and radio properties of Weak emission-Line Quasars (WLQs) (tables 1 and 3 of the paper) (11 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)
  SDSS (char) SDSS identification ( (;meta.main)
  f_SDSS (char) [hi] Note about the X-ray data (Note G1)   (meta.code)
  z  Redshift (src.redshift)
  rOX arcsec (n) Angular distance between the optical and X-ray position (Note 2)   (pos.angDistance)
  f_ObsDate (char) [d] Merged image (Note G1)   (meta.code)
  ObsDate "Y:M:D" (n)Date of observation (time.epoch)
  ObsID  (n) Chandra observation identification number (
  ExpT ks Chandra exposure time (corrected for detector dead time) (time.duration;obs.exposure)
  Ref  (n) Reference number in which the source were first identified as WLQ (Weak emission-Line quasar) or BL Lac candidate (Note 5)   (meta.bib)
  SimbadName (char) Designation understandable by the Simbad data-base (

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
  NH 10+20cm-2Neutral galactic absorption column density from Dickey & Lockman (1990ARA&A..28..215D) (phys)
  AB1450 mag Monochromatic AB magnitude at a rest-frame wavelength of 1450Å (phot.mag;em.UV.100-200nm)
  f_AB1450 (char) [j] Spectrum from Keck (Note G1)   (meta.code)
  BMAG mag Absolute B-band magnitude (phot.mag;em.opt.B)
  F2500 10uJy Flux density at rest-frame 2500Å in units of 10–28erg/cm2/s/Hz (10–5Jy) (phot.flux;em.UV)
  L2500 [10-7W] Log monochromatic luminosity at a rest-frame wavelength of 2500Å (phys.luminosity)
  l_CRate (char) Limit flag on CRate (meta.code.error)
  CRate ct/ks Observed count rate in the 0.5-2keV band (phot.count;em.X-ray)
  E_CRate ct/ks (n) Positive error on CRate (stat.error;stat.max)
  e_CRate ct/ks (n) Negative error on CRate (stat.error)
  f_CRate (char) [k] corrected for exposure map (Note G1)   (meta.code)
  l_Fx (char) Limit flag on Fx (meta.code.error)
  Fx aW/m2 Galactic absorption-corrected flux in the 0.5-2keV band (in 10–15erg/cm2/s) (phot.flux;em.X-ray.soft;pos.galactic)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
  E_Fx aW/m2 (n) Positive error on Fx (stat.error;stat.max)
  e_Fx aW/m2 (n) Negative error on Fx (stat.error)
  l_F2keV (char) Limit flag on F2keV (meta.code.error)
  F2keV nJy Flux density at rest-frame 2keV in units of 10–32erg/cm2/s/Hz (10–9Jy) (phot.flux;em.X-ray)
  l_L2keV (char) Limit flag on log2keV (meta.code.error)
  L2keV [10-7W] Log monochromatic luminosity at rest-frame 2keV (log(νLν)) (phys.luminosity)
  l_logL (char) Limit flag on logL (meta.code.error)
  logL [10-7W] Log luminosity in the rest-frame 2-10keV band (phys.luminosity)
  l_aox (char) Limit flag on aox (meta.code.error)
  aox  Optical-to-X-ray power-law slope (Note 4)   (spect.index)
  l_Daox (char) Limit flag on Daox (meta.code.error)
  Daox  Difference between measured and predicted αox (Note 5)   (
  l_Sigox (char) Limit flag on Sigox (meta.code.error)
  Sigox  Significance of the difference between measured and predicted αox (Note 6)   (
  l_aro (char) Limit flag on aro (meta.code.error)
  aro  Radio-to-optical power-law slope (Note 7)   (spect.index)
  f_aro (char) [l] Radio flux density from NVSS (Note G1)   (meta.code)
  qso7  SDSS-DR7 quasar catalog data (Schneider et al. 2010, Cat. VII/260) (meta.ref.url)
  Sloan  Display the SDSS data for this object (meta.ref.url)
  _RA deg (i) Positions from SDSS name (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Positions 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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