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VizieR

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

  
J/AJ/124/1670
  Post-T Tauri Stars in Sco-Cen Association (Mamajek+, 2002)
ReadMe+ftp
2002AJ....124.1670M
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/124/1670/table2Properties of RASS-ACT/TRC candidates (96 rows)

Simple ConstraintList Of Constraints
 
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)
  TYC (char) The Tycho-2 name (meta.id;meta.main)
  Group (char) The OB subgroup (meta.id)
  RAJ2000 "h:m:s" (i) Hour of Right Ascension (J2000) from the TYC (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Degree of Declination (J2000) from the TYC (pos.eq.dec;meta.main)
  pmRA mas/yr Proper motion in Right Ascension (Note 1)   (pos.pm;pos.eq.ra)
  e_pmRA mas/yr Error in pmRA (stat.error)
  pmDE mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
  e_pmDE mas/yr Error in pmDE (stat.error)
  Vmag mag The VT band magnitude (phot.mag;em.opt.V)
  e_Vmag mag Error in Vmag (stat.error)

ALL cols		    
 (i)indexed column
  B-V mag The (BT - VT) band color (phot.color;em.opt.B;em.opt.V)
  e_B-V mag Error in B-V (stat.error)
  Jmag mag The 2MASS J band magnitude (phot.mag;em.IR.J)
  e_Jmag mag Error in Jmag (stat.error)
  Hmag mag The 2MASS H band magnitude (phot.mag;em.IR.H)
  e_Hmag mag Error in Hmag (stat.error)
  Ksmag mag The 2MASS Ks band magnitude (phot.mag;em.IR.K)
  e_Ksmag mag Error in Ksmag (stat.error)
  1RXS (char) The X-ray counterpart name in RASS-BSC (meta.id)
  Sep arcsec The optical - X-ray separation (pos.angDistance)
  Xcts ct/s The X-ray counts (phot.count;em.X-ray)
  HR1  The Hardness ratio (phot.flux;arith.ratio)
  MML  (n) Number in table5.dat if "pre-MS" or "pre-MS?" in nature (meta.id)
  Simbad  ask the Simbad data-base about this object (meta.ref)

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