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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
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NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/AN/324/219
  Extinction of OB stars (Wegner, 2003)
ReadMe+ftp
2003AN....324..219W
Similar Catalogs
Post annotation 		img(gal)
1.J/AN/324/219/table1Total-to-selective extinction ratios R and absolute magnitudes MV with their errors (597 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)
  Name (char) Star name (Note 1)   (meta.id;meta.main)
  Vmag mag V magnitude (phot.mag;em.opt.V)
  SpType (char) MK spectral type (src.spType)
  r_SpType (char) References for SpType, in refs.dat file (meta.bib)
  E(B-V) mag Extinction in B-V (phot.color.excess)
  r_E(B-V)  References for UBV data, in refs.dat file (meta.bib)
  R  Total-to-selective extinction ratio, R=A(V)/E(B-V) (phys.absorption)
  e_R  rms uncertainty on R (stat.error)
  VMAG mag (n) Absolute V magnitude (phys.magAbs;em.opt.V)
  e_VMAG mag (n) rms uncertainty on Vmag (stat.error)
  u_VMAG (char) Uncertainty flag on Vmag (no rms uncertainty) (meta.code.error)
  Rem (char) Remarks (meta.note)
  Simbad  ask the Simbad data-base about this object
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

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