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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/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  (i) Record number assigned by the VizieR team. Should Not be used for identification.
  HR  (i) [11/8998] Bright Star catalogue number
  Name (char) (i) Star's name
  SpType (char) (i) MK spectral classification
  Vmag mag (i) V magnitude
  B-V mag (i) B-V magnitude
  E(B-V) mag (i) Color excess
  log(NH) [cm-2] (i) Hydrogen column density
  Dist pc (i) Distance
  log(Lbol) [10-7W] (i) Bolometric luminosity
  Texp s (i) Exposure time

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

ALL cols
    
 (i)indexed column
Adapt form
Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  


The following problems were encountered in this VizieR run:
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If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR2017780.err (2026-08-12T21:28:28)
-3
-source=J/A+AS/118/481/table2
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