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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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  Structures of dust in Perseus molecular cloud (Kirk+, 2006)
Post annotation
1.J/ApJ/646/1009/table2Properties of Extinction Cores in Perseus (39 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)
  EC  (i) Identification number, [KJD2006] EC NN in Simbad (;meta.main)
  n_EC (char) C indicates clumps related to this core in table1 (meta.ref.url)
  RAJ2000 "h:m:s" (i) Peak flux right ascension (J2000) (Note 1)   (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Peak flux declination (J2000) (Note 1)   (pos.eq.dec;meta.main)
  AVpeak  Peak extinction (Note 2)   (phys.absorption)
  AVbg  Background extinction (Note 2)   (phys.absorption)
  Mass solMass Mass (Note 2)   (phys.mass)
  sigmax arcsec sigmax (Note 2)   (pos.eq.ra;arith.diff)
  sigmay arcsec sigmay (Note 2)   (pos.eq.dec;arith.diff)
  <n> 10+3cm-3 Mean number density (Note 2)   (
  ESC  Associated extinction super core, [KJD2006] ESC NN in Simbad, in table3 (

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