VizieR

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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/690/644
  Properties of SDSS QSOs in the ChaMP (Green+, 2009)
ReadMe+ftp
2009ApJ...690..644G
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/690/644/table2(c)Properties of SDSS quasars detected by Chandra (1135 rows)
2.J/ApJ/690/644/table3(c)Properties of SDSS quasars with Chandra limits (347 rows)
Help Xmatch is

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortJoin tables
more join
Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned))
   (ALL)ObjID (char) SDSS-DR6 ObjID ((unassigned))
   (ALL)imag mag SDSS i band PSF magnitude (dereddened) ((unassigned);(unassigned))
   (ALL)zph  Photometric redshift ((unassigned))
   (ALL)pr(zph)   [0,1] Photometric redshift probability ((unassigned))
   (ALL)zph0  Photometric redshift lower limit ((unassigned))
   (ALL)zph1  Photometric redshift upper limit ((unassigned))
   (ALL)zbest  Best redshift ((unassigned))
   (ALL)r_zbest (char) Reference if spectroscopic redshift (Note G1)   ((unassigned);(unassigned))
  (1)CXOMP (char) ChaMP X-ray source name (JHHMMSS.s+DDMMSS) ((unassigned);(unassigned))
  (1)ChaMPid (char) Internal ChaMP source ID (Note 2)   ((unassigned);(unassigned))

ALL cols		    
 (i)indexed column
   (ALL)OAA arcmin Chandra off-axis angle ((unassigned))
  (1)Xct ct Net counts in the 0.3-8keV range ((unassigned);(unassigned))
  (1)e_Xct  RMS uncertainty on Xct ((unassigned))
   (ALL)Exp ks Vignetting-corrected exposure time ((unassigned);(unassigned))
   (ALL)nHgal 10+20cm-2Galactic absorbing HI column density ((unassigned))
  (1)nHintr 10+22cm-2(n) Best fit intrinsic absorbing HI column density ((unassigned))
  (1)nHup 10+22cm-2(n) 90% upper error limit on nHintr ((unassigned))
  (1)nHlo 10+22cm-2(n) 90% lower error limit on nHintr ((unassigned))
  (1)Gam  X-ray photon energy index {Gamma} ((unassigned))
  (1)Gam.up  90% lower error limit on {Gamma} ((unassigned))
  (1)Gam.lo  90% lower error limit on {Gamma} ((unassigned))
   (ALL)Fxb [mW/m2] 0.5-8keV flux in erg/cm2/s (log10) ((unassigned);(unassigned))
   (ALL)logLx [10-7W] 2keV luminosity in erg/s (log10) ((unassigned);(unassigned))

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)logL2500 [10-7W] 2500Å luminosity in erg/s (log10) ((unassigned))
   (ALL)aox  Optical/X-ray Spectral index (Note G3)   ((unassigned);(unassigned))
   (ALL)F20cm mJy (n) 1.4GHz FIRST radio flux density (Note 3)   ((unassigned);(unassigned))
  (1)n_F20cm   [0/1] 1 if multiple/extended radio morphology ((unassigned))
   (ALL)RL mag Radio loudness (Note G4)   ((unassigned);(unassigned))
   (ALL)Cl   [0/3] Spectral classification (Note G5)   ((unassigned))
  (1)Target   [0/1] is source a Chandra PI target? ((unassigned))
   (ALL)Comm (char) Comments ((unassigned))
  (1)ChaMP (char) Display the ChaMP X-ray point source catalog (Kim et al. 2007, Cat. J/ApJS/169/401) ((unassigned))
   (ALL)DR7Q (char) Display the SDSS-DR7 quasar catalog (Schneider et al. 2010, Cat. VII/260) ((unassigned))
   (ALL)DR6 (char) Details from SDSS-DR6 (Adelman-McCarthy+, 2007, Cat. II/282 ((unassigned))
   (ALL)Sloan (char) Display the SDSS data for this quasar ((unassigned))
  (1)Simbad (char) (i) ask the Simbad data-base about this object

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)NED (char) (i) ask the NED data-base about this object
   (ALL)RAJ2000 deg SDSS source right ascension (J2000) ((unassigned);(unassigned))
   (ALL)DEJ2000 deg SDSS source declination (J2000) ((unassigned);(unassigned))
  (2)ObsID  Chandra observation ID ((unassigned);(unassigned))
  (2)ccdid  ACIS CCD ID ((unassigned);(unassigned))
  (2)Xlim ct 90% Counts upper limit the 0.3-8keV range (Note 1)   ((unassigned);(unassigned))
  (2)SimbadName (char) Designation understandable by the Simbad data-base ((unassigned))

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:
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****Bad db number: -1
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****db1_relink(0): connection was not opened
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****Bad db number: -1
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****db1_relink(0): connection was not opened
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****Bad db number: -1
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****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
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****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR3696170.err (2026-08-11T20:50:17)
-3
-source=J/ApJ/690/644
-ref=VIZ6a7b8b0938662a
elapse time 0
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