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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

  Chandra survey of 13-h XMM/ROSAT survey (McHardy+, 2003)
Post annotation
1.J/MNRAS/342/802/tablea1Chandra sources with alternative optical counterparts (21 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)
  [MGN2003]  Sequential number of Chandra source
  Alt (char) [UP] Note on identification (Note G1)   
  Flux 10-18W/m20.5-7.0keV flux
  chi2  Cash ξ2 value for the Chandra source
  RAJ2000 "h:m:s" (i) Chandra right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Chandra declination (J2000) (pos.eq.dec;meta.main)
  DRA(O-X) arcsec (n) Optical-Chandra offset in right ascension
  DDE(O-X) arcsec (n) Optical-Chandra offset in declination
  D(O-X) arcsec (n) Total optical-Chandra offset
  Rmag mag R magnitude of the optical counterpart
  OffC arcmin Chandra off-axis angle of the source
  OffX arcmin XMM off-axis angle of the source
  FWHM arcsec (n) Fulll Width at Half Maximum
  S/G  (n) [0/1] Stellarity of the optical counterpart 0 for galaxy, 1 for star

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