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/271/20
  Broad emission line of 4FGL blazars (Chen+, 2024)
ReadMe+ftp
2024ApJS..271...20C
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/271/20/table1The sample of 979 Fermi blazars (979 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. (meta.record)
  sp (char) Display the emission line fluxes of this source (link to Table 2) (meta.ref.url)
  4FGL (char) (i) 4FGL-DR4 catalog identifier (JHHMM.m+DDMM) (meta.id;meta.main)
  Name (char) Other name (meta.id)
  z   [0.027/4.4] Spectroscopic redshift (src.redshift)
  C1 (char) 4FGL-DR4 catalog classification (Note 1)   (meta.code.class;src.class)
  C2 (char) Yang+ 2022, J/ApJS/262/18 classification (meta.code.class;src.class)
  lognu [Hz] (n) [12.1/18.2] Log peak frequency (Note 2)   (em.freq)
  F0.1-100 mW/m2/sr [5e-13/7.4e-10] The 0.1-100GeV gamma-ray flux; erg/cm2/sr (phot.flux;em.gamma.hard)
  alpha   [1.4/3.3] 4FGL-DR4 catalog photon spectral index (spect.index)
  logLg [10-7W] [42.8/48.9] Log 0.1-100GeV gamma-ray luminosity; erg/s (phys.luminosity;em.gamma)
  logLBLR [10-7W] [40.4/46.7] Log Broad-Line Region luminosity; erg/s (phys.luminosity)
  r_logLBLR (char) Reference code for logLBLR (Note 3)   (meta.ref;phys.luminosity)
  delta   [0.45/88.6] Doppler factor from this work (arith.factor)
  DR3  (n)Display data from 4FGL-DR3 (IX/67) (meta.ref.url)
  Y22  (n)Display data from Yang+ 2022, J/ApJS/262/18 (meta.ref.url)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  NED  ask the NED data-base about this object (meta.ref.url)
  _RA deg (i) Positions from SIMBAD or from the 4FGL-DR4 (https://fermi.gsfc.nasa.gov/ssc/data/access/lat/14yr_catalog/gll_psc_v32.reg) (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Positions from SIMBAD or from the 4FGL-DR4 (https://fermi.gsfc.nasa.gov/ssc/data/access/lat/14yr_catalog/gll_psc_v32.reg) (declination part) (pos.eq.dec;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 METAhit set etime=839748911,  Ncalls = Ncalls+1 where catid=22710020 and hstid=-1 and btime=838906200
**** 
**** --POSTGRES MSG db=1
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERREUR:  n'a pas pu sérialiser un accès à cause d'une mise à jour en parallÃ
****¨le 
****ERREUR:  n'a pas pu sérialiser un accès à cause d'une mise à jour en parallÃ
****¨le 
****Error execute query: Insert into METAhit (catid, hstid, btime, etime, Ncalls, N2list) VALUES (22710020,-1,838906200,839748911, 1,0)
**** 
**** --POSTGRES MSG db=1
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERREUR:  la valeur d'une clé dupliquée rompt la contrainte unique « metahit_p
****key » DETAIL:  La clé « (catid, hstid, btime)=(22710020, -1, 838906200) » ex
****iste déjà. 
****ERREUR:  la valeur d'une clé dupliquée rompt la contrainte unique « metahit_p
****key » DETAIL:  La clé « (catid, hstid, btime)=(22710020, -1, 838906200) » ex
****iste déjà. 
****Error execute query: UPDATE METAstat set nother=nother+1, tother=839748911 Where phase=3 and catid=22710020
**** 
**** --POSTGRES MSG db=1
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERREUR:  n'a pas pu sérialiser un accès à cause d'une mise à jour en parallÃ
****¨le 
****ERREUR:  n'a pas pu sérialiser un accès à cause d'une mise à jour en parallÃ
****¨le
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR2888211.err (2026-08-11T07:35:11)
-3
-source=J/ApJS/271/20/table1
-ref=VIZ6a7ad0af2c1213
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