VizieR

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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/144/213
  Chandra X-ray observations of M81 (Swartz+, 2003)
ReadMe+ftp
2003ApJS..144..213S
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/144/213/table2(c)M81 Discrete X-Ray Sources (177 rows)
2.J/ApJS/144/213/table3M81 Bright X-Ray Sources (33 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)[SGM2003]  (i) The X-ray source number (meta.id;meta.main)
  (1)RAJ2000 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
  (1)DEJ2000 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
  (1)CRate 10-4ct/s Aperture-corrected number of source counts (phot.count;em.X-ray)
  (1)e_CRate 10-4ct/s Uncertainty in CRate (stat.error)
  (1)S/R  Signal-to-Noise ratio for CRate (stat.snr)
  (1)l_Vmag (char) Limit flag on Vmag (meta.code.error)
  (1)Vmag mag (n) The visual magnitude (Note 1)   (phot.mag;em.opt.V)
  (1)f_Vmag (char) [HI] Flag on Vmag (Note 2)   (meta.code.error)
  (1)CCD (char) CHANDRA ACIS CCD device identification (meta.id;instr)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Region (char) Global environment code (Note 3)   (meta.note)
   (ALL)XLum 10+30W X-ray luminosity (Note 4)   (phys.luminosity;em.X-ray)
   (ALL)e_XLum 10+30W Uncertainty in XLum (stat.error)
  (1)Com (char) Additional comments (Note 5)   (meta.note)
  (2)NH 10+20cm-2Hydrogen column density (phys.columnDensity)
  (2)e_NH 10+20cm-2rms uncertainty on NH (stat.error)
  (2)Sp-Index  Spectral parameter (Note 1)   (spect.index)
  (2)e_Sp-Index  rms uncertainty on SpPar (stat.error)
  (2)chi2  chi2 value (stat.fit.chi2)
  (2)DOF  Degrees of freedom (stat.fit.dof)
  (2)PKS  Kolmogorov-Smirnov statistic result (Note 2)   (stat.fit.goodness)

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