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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+A/297/391
  T Tauri stars ROSAT survey (Neuhaeuser+, 1995)
ReadMe+ftp
1995A&A...297..391N
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/297/391/table2ROSAT ALL Sky Survey (RASS) data for TTS above RASS detection limit (56 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)
  Name (char) Name (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) Right ascension J2000.0 (X-ray position) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination J2000.0 (X-ray position) (pos.eq.dec;meta.main)
  Dist arcsec Distance between X-ray and optical positions (pos.angDistance)
  n_Dist (char) [:] A colon indicates X-ray sources that appear to be extended (meta.note)
  HR1   [-1/1] Hardness ratio 1 (Note 1)   (phot.flux;arith.ratio)
  e_HR1  rms uncertainty on HR1 (stat.error)
  HR2   [-1/1] Hardness ratio 2 (Note 1)   (phot.flux;arith.ratio)
  e_HR2  rms uncertainty on HR2 (stat.error)
  Xcount ct Background subtracted X-ray counts (for multiples and source confusion cases, we list the combined number of counts). (phot.count;em.X-ray)
  e_Xcount ct rms uncertainty on Xcount (stat.error)
  Exp s RASS exposition time (time.duration;obs.exposure)

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