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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/ApJ/657/116
  X-ray and UV parameters of radio-quiet quasars (Kelly+, 2007)
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img(gal)
1.J/ApJ/657/116/table2(c)List of Archival Sources (204 rows)
2.J/ApJ/657/116/table4(c)X-ray and UV Parameters (174 rows)
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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)
   (ALL)Name (char) Source identification (HHMM+DDMM, J2000, QSO JHHMM+DDMM in Simbad) (meta.id;meta.main)
  (1)RAJ2000 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
   (ALL)z  Redshift (src.redshift)
  (1)r_z  Observed frame optical spectrum reference (Note 3)   (meta.ref;pos.frame)
  (1)rmag mag The r-band apparent magnitude (phot.mag;em.opt.R)
  (1)r_rmag  Reference for rmag (Note 3)   (meta.ref;pos.frame)
  (1)OBSID  Observation identification number (meta.id;obs)
  (1)theta arcmin Off-axis angle (instr.offset)
  (1)Cts ct Number of observed background-subtracted 0.3-7.0keV source counts (Note 1)   (phot.count;em.X-ray)

ALL cols
    
 (i)indexed column
  (1)ExpTime ks Exposure time (Note 1)   (time.duration;obs.exposure)
  (1)l_FX (char) Limit flag on FX (meta.code.error)
  (1)FX 10-17W/m2Unabsorbed 2-10 keV flux (Note 2)   (phot.flux;em.X-ray)
  (1)e_FX 10-17W/m2(n) Uncertainty in FX (Note 2)   (stat.error)
   (ALL)SimbadName (char) Designation understandable by the Simbad data-base (meta.id)
  (2)New (char) [e] e: One of seven new Chandra observations (meta.code)
  (2)NH 10+20cm-2Galactic Hydrogen column density (Note 1)   (phys.columnDensity;pos.galactic)
  (2)l_n0 (char) Limit flag on n0 (meta.code.error)
  (2)n0 10-6cm-2/s/keVNormalization value at 1keV (Note 2)   (stat.fit.param)
  (2)E_n0 10-6cm-2/s/keV(n) Upper 1σ error in n0 (stat.error;stat.max)
  (2)e_n0 10-6cm-2/s/keV(n) Lower 1σ error in n0 (stat.error)
  (2)Gamma  (n) Photon index (Note 3)   (meta.code;spect.index)
  (2)E_Gamma  (n) Upper 1σ error in Gamma (stat.error;stat.max)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)e_Gamma  (n) Lower 1σ error in Gamma (stat.error)
  (2)logL2500 10-7W Log of the 2500Å luminosity (Note 4)   (phys.luminosity)
  (2)l_logL2keV (char) Limit flag on logL2keV (meta.code.error)
  (2)logL2keV 10-7W Log of the 2keV luminosity (Note 4)   (phys.luminosity;em.X-ray)
  (2)l_a-ox (char) Limit flag on a-ox (meta.code.error)
  (2)a-ox  The X-ray to UV/optical flux ratio (phot.flux;arith.ratio)
  (2)a-UV  (n) The UV spectral slope (Note 5)   (spect.index)
  (2)_RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  (2)_DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

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