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. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
   (ALL)[SGM2003]  (i) The X-ray source number ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  (1)RAJ2000 "h:m:s" Hour of Right Ascension (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  (1)DEJ2000 "d:m:s" Degree of Declination (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  (1)CRate 10-4ct/s Aperture-corrected number of source counts ((unassigned);(unassigned);(unassigned);time.duration;(unassigned);(unassigned))
  (1)e_CRate 10-4ct/s Uncertainty in CRate ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (1)S/R  Signal-to-Noise ratio for CRate ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract;meta.main)
  (1)l_Vmag (char) Limit flag on Vmag ((unassigned);(unassigned);(unassigned);pos.galactic.lon)
  (1)Vmag mag (n) The visual magnitude (Note 1)   ((unassigned);(unassigned);(unassigned);stat.filling;(unassigned);(unassigned))
  (1)f_Vmag (char) [HI] Flag on Vmag (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;pos.galactic.lon)
  (1)CCD (char) CHANDRA ACIS CCD device identification ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;meta.code.qual)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Region (char) Global environment code (Note 3)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
   (ALL)XLum 10+30W X-ray luminosity (Note 4)   ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);(unassigned))
   (ALL)e_XLum 10+30W Uncertainty in XLum ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (1)Com (char) Additional comments (Note 5)   ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.orbital)
  (2)NH 10+20cm-2Hydrogen column density ((unassigned);(unassigned);(unassigned);(unassigned))
  (2)e_NH 10+20cm-2rms uncertainty on NH ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  (2)Sp-Index  Spectral parameter (Note 1)   ((unassigned);phys.veloc.orbital;arith.diff;phys.abund.Y;meta.main)
  (2)e_Sp-Index  rms uncertainty on SpPar ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (2)chi2  chi2 value ((unassigned);phys.veloc.orbital;arith.diff;time.resolution;meta.main)
  (2)DOF  Degrees of freedom (time.lifetime;(unassigned);arith.factor;meta.version;meta.main)
  (2)PKS  Kolmogorov-Smirnov statistic result (Note 2)   ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846523955 Where phase=3 and catid=21440213
**** 
**** --POSTGRES MSG db=0
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846523955 Where phase=3 and catid=21440213
**** 
**** --POSTGRES MSG db=0
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR3006557.err (2026-10-28T17:32:34)
-3
-source=J/ApJS/144/213
-ref=VIZ6ae231b22de05d
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