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/MNRAS/491/4925
  Changing-state quasars with CRTS (Graham+, 2020)
ReadMe+ftp
2020MNRAS.491.4925G
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/491/4925/table2(c)CSQs selected in CRTS and associated features (111 rows)
2.J/MNRAS/491/4925/tablea1(c)CLQs reported in the literature with CRTS coverage and associated features (61 rows)
3.J/MNRAS/491/4925/tableb1(c)Spectroscopic observations of CSQ candidates (111 rows)
Help Xmatch is

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)Name (char) Quasar name (SDSS JHHMMSS.s+DDMMSS.s) ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  (1+2)Vmagmed mag Median CRTS magnitude ((unassigned);(unassigned);(unassigned);stat.filling;(unassigned);(unassigned))
  (1+2)z  Redshift ((unassigned);(unassigned);(unassigned);pos.parallax;meta.main)
  (1+2)logMBH [Msun] (n) Logarithm of the quasar mass ((unassigned);phys.veloc.orbital;arith.diff;(unassigned))
  (1)logLV [10-7W] Logarithm of the quasar luminosity ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);(unassigned))
  (1+2)Amp mag Optical amplitude ((unassigned);(unassigned);(unassigned);pos.supergalactic.lat;meta.main)
  (1+2)DBB mag Bayesian block change {Delta}BB ((unassigned);(unassigned);(unassigned);stat.filling;instr.background)
  (1+2)SWV1  Slepian wavelet variance measure ((unassigned);phys.veloc.orbital;arith.diff;phys.atmol.sWeight.nuclear;meta.main)
  (1+2)DW1 mag (n) Absolute change in W1 |{Delta}W1| ((unassigned);(unassigned);(unassigned);stat.filling;instr.background)
  (1)D(Hb/[OIII])  Change in flux ratio of H{beta} to [OIII] ((unassigned);(unassigned);(unassigned);phys.atmol.qn.I;instr.param)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)SimbadName (char) (n)Designation understandable by the Simbad data-base ((unassigned);(unassigned);(unassigned);spect.line.veloc)
   (ALL)_RA deg Positions from Name (right ascension part) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
   (ALL)_DE deg Positions from Name (declination part) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  (2)f_Name (char) [*] Flag on Name (Note 1)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  (2)Tran (char) Transition (Disappear or Appear) (Note 2)   ((unassigned);(unassigned);(unassigned);phys.atmol.sweight;meta.main)
  (2)Ref  References (Note 3)   ((unassigned);(unassigned);(unassigned);phys.veloc.dispersion)
  (3)MJD1 (char) d First epoch spectra from SDSS ((unassigned);phys.veloc.orbital;arith.diff;pos.centroid;meta.main)
  (3)MJDsub (char) d Subsequent epoch spectra from SDSS, Palomar (DBSP), and Keck (LRIS, ESI) ((unassigned);(unassigned);(unassigned);pos.centroid;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846493016 Where phase=3 and catid=74914925
**** 
**** --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=846493016 Where phase=3 and catid=74914925
**** 
**** --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/VR1013812.err (2026-10-28T08:56:55)
-3
-source=J/MNRAS/491/4925
-ref=VIZ6ae1b8d8f7834
elapse time 1