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VizieR

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+A/371/833
  ROSAT Ultra Deep Survey (Lehmann+, 2001)
Post annotation
img(gal)
1.J/A+A/371/833/table3(c)X-ray source catalogue (94 rows)
2.J/A+A/371/833/table4(c)Photometric and spectroscopic properties of optical counterparts (94 rows)
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Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
   (ALL)DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  (1)e_FHRI 10-17W/m2(n) HRI flux error (stat.error)
  (1)e_FPSPC 10-17W/m2(n) PSPC flux error (stat.error)
  (1)e_HR1  (n) Error of HR1 (stat.error)
  (1)e_Pos arcsec 1-Sigma error of the source position (stat.error)
  (1)FHRI 10-17W/m2(n) HRI flux in the 0.5-2.0keV band (phot.flux;em.X-ray)
  (1)FPSPC 10-17W/m2(n) PSPC flux in the 0.5-2.0keV band (phot.flux;em.X-ray)
  (1)HR1  (n) HR1 hardness ratio (Note 3)   (phot.flux;arith.ratio)
   (ALL)Link (char) Show X-ray properties, and optical counterpart (meta.ref)
  (1)n_Pos (char) [HPR] Source position origin (Note 2)   (meta.note)
  (1)n_Seq (char) [(H P12)] Sample (Note 1)   (meta.note)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)offHRI arcmin Distance of the source from the center of the HRI field (instr.offset)
  (1)offPSPC arcmin Distance of the source from the center of the PSPC field (instr.offset)
   (ALL)RAJ2000 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)RXJ (char) Source name (meta.id;meta.main)
  (1)Seq  Internal source number (meta.id)
  (2)Class (char) Optical classification (Note 4)   (src.class)
  (2)DeltaPos arcsec Distance to the X-ray source position (pos.angDistance)
  (2)G (char) [sg] Optical morphological parameter (Note 2)   (src.class.starGalaxy)
  (2)IDclass (char) Classification scheme (Note 5)   (meta.code.class)
  (2)log(FX/Fo)  Logarithm of the X-ray to optical flux ratio (phot.flux;arith.ratio)
  (2)logLX [10-7W] (n) Logarithm of the 0.5-2.0keV X-ray luminosity (phys.luminosity;em.X-ray)
  (2)Name (char) Name of optical counterpart (meta.id;meta.main)
  (2)n_DeltaPos (char) [HPR] Source position origin (Note 1)   (meta.note)
  (2)R-K' mag (n) R-K' colour index (phot.color;em.opt.R;em.IR.K)
  (2)Rmag mag R magnitude (phot.mag;em.opt.R)
  (2)SX 10-17W/m2HRI or PSPC flux in the 0.5-2.0keV energy band (phot.flux;em.X-ray)
  (2)VMAG mag (n) Absolute V magnitude (phys.magAbs;em.opt)
  (2)z  (n) Redshift (Note 3)   (src.redshift)

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