VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .
CDS

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/ApJ/554/202
  ROSAT X-ray observations of M81 (Immler+, 2001)
ReadMe+ftp
2001ApJ...554..202I
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/554/202/table4ROSAT PSPC M81 source list (69 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)
  PNN (char) (i) Source name (where `P' denotes PSPC) (Note G1)   (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  CR ct/ks Net count rate in the 0.5-2keV band (phot.count;em.X-ray)
  e_CR ct/ks Uncertainty in CR (stat.error)
  HR1  First hardness ratio (Note 1)   (phot.flux;arith.ratio)
  e_HR1  Uncertainty in HR1 (stat.error)
  HR2  Second hardness ratio (Note 2)   (phot.flux;arith.ratio)
  e_HR2  Uncertainty in HR2 (stat.error)
  Com (char) Further HRI source positional coincidences and variability comments (meta.note)

ALL cols		    
 (i)indexed column
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usage  Display UCD1+    UCD1  
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