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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

  
J/A+A/655/A109
  Chandra view of the LX-LUV relation in quasars (Bisogni+, 2021)
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2021A&A...655A.109B
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Post annotation 		img(gal)
1.J/A+A/655/A109/table2Properties of the 3430 X-ray observations (3430 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)
  Name (char) Quasar name in DR14, HHMMSS.ss+DDMMSS.s (meta.id;meta.main)
  z  Redshift (src.redshift)
  ObsId  Chandra Observation Identifier (meta.id;obs.param;obs)
  theta [arcmin] Off-axis angle of source in X-ray observation (obs.param;obs)
  ExpTime [s] Exposure time of X-ray obs. (time.duration;obs.exposure)
  DRflag (char) Number of SDSS Data Release, DR7, DR12 or DR14 (meta.code)
  logF2500A [mW/m2/Hz]Rest-frame fluxes at 2500 Angstroem (Note 1)   (phot.flux;em.UV)
  e_logF2500A [mW/m2/Hz]Error on rest-frame fluxes at 2500Å (stat.error)
  logF2keV [mW/m2/Hz]Rest-frame fluxes at 2keV (phot.flux;em.X-ray)
  e_logF2keV [mW/m2/Hz]Lower error on fluxes at 2keV (stat.error)

ALL cols		    
 (i)indexed column
  E_logF2keV [mW/m2/Hz]Upper error on fluxes at 2keV (stat.error;stat.max)
  Gamma  Photon index (meta.code;spect.index)
  e_Gamma  Lower error on photon index (stat.error)
  E_Gamma  Upper error on photon index (stat.error;stat.max)
  logF2keVlim  (n) Rest-frame 2keV flux limit per observation (phot.flux;em.X-ray)
  n_logF2keVlim (char) [I] I for -Infinity (meta.note)
  Cts  Raw counts in soft band (0.5-2keV) (phot.count;em.X-ray)
  Cth  Raw counts in hard band (2-7keV) (phot.count;em.X-ray)
  SNs  SN in the soft band (0.5-2keV) (stat.snr)
  SNh  (n) SN in hard band (2-7keV) (stat.snr)
  SimbadName (char) (n)Designation understandable by the Simbad data-base (meta.id)
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _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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