VizieR

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

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Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
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NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/ApJ/735/26
  Chandra observations of M81 (Sell+, 2011)
ReadMe+ftp
2011ApJ...735...26S
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/735/26/xsourcesMerged extraction and fit data of sources in the master and borderline source lists (tables 3 and 4) (276 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) Source index number (Note G1)   (meta.id;meta.main)
  n_Seq (char) Source off chip (Note 2)   (meta.note)
  RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  OAA arcmin (n) Average off-axis angle (instr.offset;stat.mean)
  SCts ct (n) Total source counts (phot.count;em.X-ray)
  BCts ct (n) Total background counts (phot.count;em.X-ray)
  Soft ct (n) Net soft (0.5-1keV) counts (phot.count;em.X-ray)
  e_Soft ct (n) Lower limit uncertainty in Soft (Note 1)   (stat.error)
  E_Soft ct (n) Upper limit uncertainty in Soft (stat.error;stat.max)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Med ct (n) Net medium (1-2keV) counts (phot.count;em.X-ray)
  e_Med ct (n) Lower limit uncertainty in Med (Note 1)   (stat.error)
  E_Med ct (n) Upper limit uncertainty in Med (stat.error;stat.max)
  Hard ct (n) Net hard (2-8keV) counts (phot.count;em.X-ray)
  e_Hard ct (n) Lower limit uncertainty in Hard (Note 1)   (stat.error)
  E_Hard ct (n) Upper limit uncertainty in Hard (stat.error;stat.max)
  PSF % (n) Average PSF fraction enclosed by extraction region (instr.det.psf;arith.ratio)
  VarS1  (n) Variability statistic (Note 3)   (src.var.index)
  Obs1 (char) Observations used to derive VarS1 (meta.id;obs)
  VarS2  (n) Variability statistic (Note 4)   (src.var.index)
  S03  (n)Cross-match with Swartz+ 2003, Cat. J/ApJS/144/213, within 10" (meta.ref.url)
  Model (char) Model type: plaw=power law, or bbod=blackbody (meta.note;phys.luminosity;meta.modelled)
  n_Model (char) [ab] Note on Model type (Note 5)   (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Param  (n) Photon Index (plaw) or kT (bbod) of Model (spect.index)
  e_Param  (n) Lower limit uncertainty in Param (Note 6)   (stat.error)
  E_Param  (n) Upper limit uncertainty in Param (Note 6)   (stat.error;stat.max)
  Norm  (n) Model normalization (Note 7)   (stat.fit.param)
  e_Norm  (n) Lower limit uncertainty in Norm (Note 6)   (stat.error)
  E_Norm  (n) Upper limit uncertainty in Norm (Note 6)   (stat.error;stat.max)
  NH 10+22/cm2(n) The H I column density (Note 8)   (phys.columnDensity)
  e_NH 10+22/cm2(n) Lower limit uncertainty in NH (Note 6)   (stat.error)
  E_NH 10+22/cm2(n) Upper limit uncertainty in NH (Note 6)   (stat.error;stat.max)
  CStat  (n) Total best-fit C-Statistic (for the source and background models together) (stat.fit.param)
  DOF  (n) [1012/1016] Degrees of Freedom (Note 9)   (stat.fit.dof)
  Lum 10+30W (n) The 0.5-8 keV luminosity (Note 10)   (phys.luminosity;em.X-ray)
  e_Lum 10+30W (n) Lower limit uncertainty in Lum (Note 6)   (stat.error)
  E_Lum 10+30W (n) Upper limit uncertainty in Lum (Note 6)   (stat.error;stat.max)
  Com (char) Comments about source extraction (Note 11)   (meta.note;phys.angSize)
  Simbad  ask the Simbad data-base about this object (meta.ref)

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