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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/table2(c)Detections (237 rows)
2.J/A+AS/118/481/table3(c)Upper limits of non-detections (1585 rows)
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Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification.
   (ALL)HR   [11/8998] Bright Star catalogue number
   (ALL)HR_data (char) Link to all parameters and notes from the Bright Star Catalogue
  (1)Name (char) Star's name
   (ALL)SpType (char) MK spectral classification
   (ALL)Vmag mag V magnitude
  (1)B-V mag B-V magnitude
  (1)E(B-V) mag Color excess
  (1)log(NH) [cm-2] Hydrogen column density
  (1)Dist pc Distance
  (1)log(Lbol) [10-7W] Bolometric luminosity

ALL cols
    
 (i)indexed column
  (1)Texp s Exposure time
  (1)OX-sep arcsec Offset between optical and X-ray position
  (1)n_OX-sep (char) [*] * for offset larger than 75 arcmin
  (1)rate ct/s Mean PSPC count rate
  (1)e_rate ct/s Error of PSPC count rate
  (1)HRatio  Hardness ratio = (H-S)/(H+S)
  (1)e_HRatio  Error of hratio
  (1)n_HRatio (char) [1±] Note on hardness ratio -: upper limit +: lower limit 1: only S band
  (1)Tx keV Estimated X-ray temperature
  (1)log(FX) [mW/m2] Apparent X-ray flux
  (1)log(e_FX) [mW/m2] Error of FX
   (ALL)log(Lx) [10-7W] X-ray luminosity
   (ALL)log(Lx/Lbol) [--] Luminosity ratio log(Lx/Lbol)

ALL cols
    
 (i)indexed column
   (ALL)Simbad (char) ask the Simbad data-base about this object
   (ALL)_RA deg Right Ascension (J2000) from SIMBAD (not part of the original data)
   (ALL)_DE deg Declination (J2000) from SIMBAD (not part of the original data)

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 (i)indexed column
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