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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

Target dimension:

Radius Box size

  Chandra observations of NGC 2244 (Wang+, 2008)
Post annotation
1.J/ApJ/675/464/catalogChandra Main and Secondary Catalog (919 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)
  Cat (char) sources from Main or Secondary catalog (
  Seq  (i) Source Sequence number; sorted by RA (Note 1)   (
  CXOU (char) Source IAUC designation; (;meta.main)
  epos arcsec Estimated random component of position error (Note 2)   (stat.error)
  OffAng arcmin Off-axis angle (instr.offset)
  Ncts ct Estimated net 0.5-8keV band extracted counts (phot.count;em.X-ray)
  e_Ncts ct Average 1σ error in Ncts (phot.count;em.X-ray)
  Bcts ct Background 0.5-8keV band extracted counts (phot.count;em.X-ray)
  Hcts ct Estimated net 2-8keV band extracted counts (phot.count;em.X-ray)
  PSF  Fraction of PSF (at 1.497keV) within extraction region (Note 3)   (instr.det.psf;obs.field;arith.ratio)

ALL cols
 (i)indexed column
  Signi  Photometric significance (Note 4)   (;phot)
  l_logPB (char) Limit flag on logPB (meta.code.error)
  logPB [-] Log probability that all 0.5-8keV counts from background (Note 5)   (stat.probability)
  Anom (char) Source anomalies (Note 6)   (meta.code)
  Var (char) Variability characterization (Note 7)   (meta.code;src.var)
  Exp ks Effective exposure time (Note 8)   (time.duration;obs.exposure)
  Emed keV Background-corrected median 0.5-8keV photon energy (
  RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)

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