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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

  DR 21 Chandra source catalogue (Rivilla+, 2014)
Post annotation
1.J/MNRAS/437/1561/table2DR 21 Chandra source catalogue, with SDSS, UKIDSS and Spitzer counterparts (281 rows)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  Seq  (i) [1/281] DR21 X sequential number (meta.record)
  RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  Counts ct [2/320] X-ray counts (phot.count;em.X-ray)
  logLX [10-7W] (n) X-ray luminosity (not corrected from extinction) (phys.luminosity;em.X-ray)
  SDSS (char) SDSS counterpart name ( (;meta.main)
  UKIDSS (char) UKIDSS counterpart name ( (
  SSTCYGX (char) Spitzer-SSTCYGX counterpart name ( (
  Simbad  ask the Simbad data-base about this object (meta.ref.url)

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