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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/ApJS/117/319
  Northern RASS X-ray sources catalog (Appenzeller+ 1998)
ReadMe+ftp
1998ApJS..117..319A
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/117/319/table1Count-rate- and area-limited X-ray complete subsample (674 rows)

Simple ConstraintList Of Constraints
 
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)
  Seq (char) Internal designation for the X-ray sources in the six study areas (Note 1)   (meta.id;meta.main)
  RXJ (char) RXJ designation (meta.id;meta.main)
  RA2000 "h:m:s" (i) X-source right ascension (2000) (pos.eq.ra;meta.main)
  DE2000 "d:m:s" (i) X-source declination (2000) (pos.eq.dec;meta.main)
  CRate ct/s Net X-ray source count rate (Note 2)   (phot.count;em.X-ray)
  e_CRate ct/s rms uncertainty on CountRate (stat.error)
  HR1  Hardness ratio HR1 (Note 3)   (phot.flux;arith.ratio)
  e_HR1  rms uncertainty on HR1 (stat.error)
  HR2  Hardness ratio HR2 (Note 3)   (phot.flux;arith.ratio)
  e_HR2  rms uncertainty on HR2 (stat.error)

ALL cols		    
 (i)indexed column
  FX 10-13mW/m2X-ray flux (phot.flux;em.X-ray)
  DRA arcsec (n) RA(X)-RA(O) (Note 4)   (pos.eq.ra;arith.diff)
  DDE arcsec (n) DE(X)-DE(O) (Note 4)   (pos.eq.dec;arith.diff)
  Q   [1-4] Identification quality index (Note 5)   (meta.code.qual)
  Class (char) Classification of the optical counterpart (Note 6)   (src.class)
  SpType (char) Spectral type for stellar sources (src.spType)
  z  (n) Redshift for extragalactic sources (src.redshift)
  Vmag mag (n) V magnitude (phot.mag;em.opt.V)
  B-V mag (n) B-V colour index (phot.color;em.opt.B;em.opt.V)
  XV  (n) XV index (log(fX/fV) (Note 7)   (spect.index)
  F4.85GHz mJy (n) Radio flux at 4.85GHz (6cm) for sources within 0°<DE<+75°, from Gregory and Condon (1991, Cat. VIII/14) (phot.flux.density;em.radio.3-6GHz)
  Name (char) designation of the (main) optical counterpart, if known (Note 8)   (meta.id.assoc)
  Rem (char) [R] remark detailed in file notes.dat (meta.note)

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