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VizieR

  
J/ApJS/271/20
  Broad emission line of 4FGL blazars (Chen+, 2024)
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2024ApJS..271...20C
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Post annotation 		img(gal)
1.J/ApJS/271/20/table2The sample of 278 Fermi blazars whose optical spectra exhibit at least one of the broad emission lines H{alpha}, H{beta}, MgII, and CIV (278 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. ((unassigned);meta.version;arith.diff;phys.veloc)
  4FGL (char) 4FGL-DR4 catalog identifier (JHHMM.m+DDMM) ((unassigned);meta.version;arith.diff;spect.line.veloc;arith)
  z   [0.04/4.1] Spectroscopic redshift ((unassigned);pos.galactic.lon;arith.diff;pos.parallax;meta.main)
  Class (char) Classification (Note 1)   ((unassigned);meta.version;arith.diff;pos.galactic;phys.atmol.sweight;meta.main)
  FHa 10-20W/m2(n) [8.7/62567] Halpha emission line flux; 1e-17erg/s/cm2 ((unassigned);em.radio.6-12GHz;arith.diff;meta.abstract;(unassigned);(unassigned))
  e_FHa 10-20W/m2(n) [0/543] Uncertainty in FHa (phot.mag.bol;phys.size.radius;arith.factor;time.age;meta.code.status;(unassigned);(unassigned))
  FHb 10-20W/m2(n) [4.9/19028] Hbeta emission line flux; 1e-17erg/s/cm2 (src.class.starGalaxy;src.veloc.component;arith.factor;meta.abstract;(unassigned);(unassigned))
  e_FHb 10-20W/m2(n) [3.8/1455] Uncertainty in FHb ((unassigned);(unassigned);(unassigned);time.age;meta.code.status;(unassigned);(unassigned))
  FMgII 10-20W/m2(n) [8.2/1745] MgII emission line flux; 1e-17erg/s/cm2 ((unassigned);(unassigned);(unassigned);meta.abstract;(unassigned);(unassigned))
  e_FMgII 10-20W/m2(n) [4.9/153] Uncertainty in FMgII ((unassigned);(unassigned);(unassigned);time.age;meta.code.status;(unassigned);(unassigned))
  FCIV 10-20W/m2(n) [7.6/4074] CIV emission line flux; 1e-17erg/s/cm2 ((unassigned);(unassigned);(unassigned);meta.abstract;(unassigned);(unassigned))
  e_FCIV 10-20W/m2(n) [5.7/1416] Uncertainty in FCIV ((unassigned);meta.version;arith.diff;time.age;meta.code.status;(unassigned);(unassigned))
  logLBLR [10-7W] [40.44/45.45] Log Broad-line region luminosity; erg/s ((unassigned);meta.version;arith.diff;(unassigned))
  e_logLBLR [10-7W] [0/0.5] Uncertainty in logLBLR ((unassigned);meta.version;arith.diff;time.age;(unassigned))

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=846439679 Where phase=3 and catid=22710020
**** 
**** --POSTGRES MSG db=1
**** 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/VR129362.err (2026-10-27T18:07:57)
-3
-source=J/ApJS/271/20/table2
-ref=VIZ6ae0e87f1f952
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