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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

  ROSAT Bright Survey (Fischer+, 1998-2000)
Post annotation
1.IX/32/rosatThe ROSAT Bright Survey (RBS) catalogue (2072 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. (meta.record)
  RBS  (i) ROSAT Bright Survey number (
  1RXSJ (char) 1RXSJ X-ray coordinates (Cat. IX/10) (
  RAJ2000 "h:m:s" (n)(i) Optical right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (n)(i) Optical declination (J2000) (pos.eq.dec;meta.main)
  Dist arcsec (n) Distance optical minus X positions (pos.angDistance)
  e_Pos arcsec X-ray positional uncertainty (1σ) as given in the 1RXS-catalog. The 90% confidence error radius is r90=1.65σ (stat.error)
  CR ct/s RASS countrate in the total ROSAT window 0.1-2.4keV (phot.count;em.X-ray)
  CRH ct/s RASS countrate in the hard ROSAT window 0.5-2.0keV (phot.count;em.X-ray)
  HR1  hardness ratio (Note 1)   (phot.flux;arith.ratio)
  HR2  hardness ratio (Note 1)   (phot.flux;arith.ratio)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
  NH 10+20cm-2Galactic hydrogen column density (phys.columnDensity)
  Name (char) (Truncated) Name in optical catalogues (
  XClass (char) Class of X-ray source (Note 2)   (src.class)
  Type (char) Type within class (Note 2)   (src.class)
  z  (n) redshift (src.redshift)
  u_z (char) Uncertainy flag on z (meta.code.error)
  l_Mag (char) Limit flag on Mag (meta.code.error)
  Mag mag (n) Optical brightness (typically in the V-band, sometimes only through spectrograph slit (phot.mag;em.opt.V)
  u_Mag (char) Uncertainty flag on Mag (meta.code.error)
  n_Mag (char) [CSNBDRE] Band and origin of magnitude (Note 3)   (meta.note)
  FX 10-17W/m2Flux in ROSAT X-ray band (phot.flux;em.X-ray)
  logFX/Fo  (n) log flux ratio X-ray to optical (phot.flux;arith.ratio)
  logLX 10-7W (n) log of X-ray luminosity (phys.luminosity;em.X-ray)
  Note (char) [Y] Y: Note detailed in notes.dat file (meta.note)

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