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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

  
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J/A+AS/118/481
  ROSAT all-sky survey catalogue of OB stars (Berghoefer+ 1996)
Post annotation
img(gal)
1.J/A+AS/118/481/table2Detections (237 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.
  HR   [11/8998] Bright Star catalogue number
  Name (char) Star's name
  SpType (char) MK spectral classification
  Vmag mag V magnitude
  B-V mag B-V magnitude
  E(B-V) mag Color excess
  log(NH) [cm-2] Hydrogen column density
  Dist pc Distance
  log(Lbol) [10-7W] Bolometric luminosity
  Texp s Exposure time

ALL cols
    
 (i)indexed column
  OX-sep arcsec Offset between optical and X-ray position
  n_OX-sep (char) [*] * for offset larger than 75 arcmin
  rate ct/s Mean PSPC count rate
  e_rate ct/s Error of PSPC count rate
  HRatio  Hardness ratio = (H-S)/(H+S)
  e_HRatio  Error of hratio
  n_HRatio (char) [1±] Note on hardness ratio -: upper limit +: lower limit 1: only S band
  Tx keV Estimated X-ray temperature
  log(FX) [mW/m2] Apparent X-ray flux
  log(e_FX) [mW/m2] Error of FX
  log(Lx) [10-7W] X-ray luminosity
  log(Lx/Lbol) [--] Luminosity ratio log(Lx/Lbol)
  Simbad  ask the Simbad data-base about this object
  _RA deg Right Ascension (J2000) from SIMBAD (not part of the original data)
  _DE deg Declination (J2000) from SIMBAD (not part of the original data)

ALL cols
    
 (i)indexed column
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