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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/2MASS sources in Cygnus OB2 (Butt+, 2006)
Post annotation
1.J/ApJ/643/238/table1Detected sources in Cyg OB2 (240 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)
  [BDB2006]  Running X-ray identification number (;meta.main)
  RAJ2000 "h:m:s" (i) Chandra Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Chandra Degree of Declination (J2000) (pos.eq.dec;meta.main)
  SNR  Signal-to-noise of source (stat.snr)
  HR  Hardness ratio (Note 1)   (phot.flux;arith.ratio)
  Ct ct Source counts from ACIS-I (phot.count;em.X-ray)
  RA2 "h:m:s" (n) 2MASS Hour of Right Ascension (J2000) (pos.eq.ra)
  DE2 "d:m:s" (n) 2MASS Degree of Declination (J2000) (pos.eq.dec)
  2MASS  Display the 2MASS data (Cutri et al. 2003, Cat. II/246) (meta.ref.url)

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