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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

  M31 deepest Chandra catalogue of point sources (Vulic+, 2016)
Post annotation
1.J/MNRAS/461/3443/table5M31 source list (795 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)
  Seq  Source sequential number (meta.record)
  CXOU (char) CXOU J name ( (;meta.main)
  RAJ2000 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
  Dist arcmin Distance from the centre of M31 (J004244.33+411607.50) (pos.angDistance)
  ePos arcsec Positional uncertainty (Note 1)   (stat.error;pos)
  theta arcmin Average off-axis angle for merged observations (instr.offset;stat.mean)
  Nobs  Number of observations extracted (meta.number)
  Det (char) Detector in which the source was detected, ACIS-I, ACIS-S, or Both (
  Reg (char) Region for a source detected in ACIS-S or Both (obs.field)
  Texp ks Total exposure time for merged observations (time.duration;obs.exposure)
  TexpMap Totat exposure map for merged observations (obs.param)
  Rsrc pix Average radius of the source extraction region (in sky pixel = 0.492") (phys.angSize;obs.field;stat.mean)
  SNR  Photometric significance (net counts / upper error on net counts) (0.3-8.0keV) (stat.snr)
  Emed keV Background-corrected median photon energy (0.3-8.0keV) (
  Match (char) Cross-match results from Section 3.4: active galactic nuclei (AGN) or low-mass X-ray binary (LMXB) (meta.code)

ALL cols
 (i)indexed column
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usage  Display UCD1+    UCD1  
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