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/263/24
  The 4LAC-DR3 catalog (Ajello+, 2022)
ReadMe+ftp
2022ApJS..263...24A
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/263/24/4lacdr34LAC-DR3 high (|b|>10deg) and low (|b|<10deg) Galactic latitude sources (original column names in green) (3814 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
Standard Original
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)
  Group (char) Latitude grouping (high or low) ((unassigned);meta.version;arith.diff;spect.line.veloc)
  4FGL (char) 4FGL name (JHHMM.m+DDMMa) (Source_Name) (Note 1)   ((unassigned);meta.version;arith.diff;spect.line.veloc;arith)
  DR   [1/3] Data release (DataRelease) (Note 2)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  RAJ2000 deg Right ascension in decimal degrees (J2000) ((unassigned);meta.version;arith.diff;(unassigned);arith)
  DEJ2000 deg Declination in decimal degrees (J2000) (instr.plate.emulsion;pos.az.azi;arith.diff;(unassigned);arith)
  GLON deg Galactic longitude (phot.fluence;em.freq;(unassigned);(unassigned);meta.main)
  GLAT deg Galactic latitude (XXXXXXX)
  Sig   [2.6/455] Source significance in {sigma} units over the 50MeV to 1TeV band (Signif_Avg) ((unassigned);obs.atmos;arith.factor;phys.polarization.circular;instr.param)
  F1000i ph/cm2/s [8.9e-12/7.5e-8] Integral photon flux from 1 to 100GeV (Flux1000) ((unassigned);(unassigned);(unassigned);phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  e_F1000i ph/cm2/s [7.5e-12/4.5e-10] F1000i 1{sigma} error (Unc_Flux1000) ((unassigned);(unassigned);(unassigned);time.age;meta.main)

ALL cols		    
 (i)indexed column
  EF100 mW/m2 [3.7e-13/8.5e-10] Energy flux from 100MeV to 100GeV obtained by spectral fitting in erg/cm2/s (Energy_Flux100) ((unassigned);(unassigned);(unassigned);phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  e_EF100 mW/m2 [1e-13/6.8e-12] EF100 1{sigma} error (Unc_Energy_Flux100) (obs.image;(unassigned);arith.factor;time.age;meta.main)
  Mod (char) Spectral type in the global model; PowerLaw, LogParabola or PLSuperExpCutoff (SpectrumType) ((unassigned);(unassigned);(unassigned);pos.posAng;src.orbital.meanAnomaly)
  PLGam   [1.4/3.2] Photon index when fitting with PowerLaw (PL_Index) ((unassigned);(unassigned);(unassigned);phys.abund.Y;meta.main)
  e_PLGam   [0.003/0.3] PLGam 1{sigma} error (Unc_PL_Index) ((unassigned);obs.atmos.extinction;arith.factor;time.age;meta.main)
  Epiv MeV [241/34572] Pivot energy (Pivot_Energy) (phot;(unassigned);arith;(unassigned))
  LPalpha   [-0.05/3.3] Photon index at Pivot_Energy ({alpha}) when fitting with LogParabola (LP_Index) ((unassigned);meta.version;arith.diff;phys.abund.Y;meta.main)
  e_LPalpha   [0.004/3] LPalpha 1{sigma} error (Unc_LP_Index) ((unassigned);meta.version;arith.diff;time.age;meta.main)
  LPbeta   [-0.12/1] Curvature parameter ({beta}) when fitting with LogParabola (LP_beta) ((unassigned);(unassigned);(unassigned);pos.bodyrc.lon;meta.main)
  e_LPbeta  (n) [0.002/1.8] LPbeta 1{sigma} error (Unc_LP_beta) (phot.fluence;(unassigned);arith.factor;time.age;meta.main)
  Flags   [0/6144] Analysis flags (Flags) Binary flag; see text and Table 5 for more explanations ((unassigned);meta.version;arith.diff;pos.galactic.lon)
  Class (char) Class designation for associated source ((unassigned);meta.version;arith.diff;phys.atmol.sweight;meta.main)
  Assoc1 (char) Name of identified or likely associated source ((unassigned);stat.covariance;arith.grad;src.class.color)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  ProbBY  (n) [0/1] Probability of association according to the Bayesian method (ASSOC_PROB_BAY) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  ProbLR   [0/1] Probability of association according to the likelihood-ratio method (ASSOC_PROB_LR) ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  CCat (char) Counterpart catalog driving the association (Counterpart_Catalog) (Note 3)   ((unassigned);(unassigned);(unassigned);spect.line.veloc;pos.wcs.crpix)
  RACdeg deg Right ascension of the counterpart Assoc1 (J2000) (RA_Counterpart) ((unassigned);meta.version;arith.diff;(unassigned))
  DECdeg deg Declination of the counterpart Assoc1 (J2000) (DEC_Counterpart) ((unassigned);obs.atmos.extinction;arith.factor;(unassigned))
  errCPos deg [3.8e-8/2.5] 95% precision of the counterpart localization (Unc_Counterpart) (instr.setup;meta.ref.pid;arith.factor;pos.cartesian;phys.atmol.element)
  RFC (char) Name of the very long baseline interferometry counterpart (VLBI_Counterpart) ((unassigned);(unassigned);(unassigned);src.class.starGalaxy)
  z  (n) [1.7e-5/4.4] Redshift (Redshift) (phot.fluence;(unassigned);arith.grad;pos.parallax;meta.main)
  SEDCl (char) SED-based class (SED_class) ((unassigned);(unassigned);(unassigned);pos.posAng;meta.main)
  EpkHE MeV (n) [0.04/1.2e+8] Energy in the observer frame of the high-energy SED peak (HE_EPeak) ((unassigned);(unassigned);(unassigned);(unassigned);pos.lsr;meta.main)
  e_EpkHE MeV (n) [0.5/5.5e+9] EpkHE 1{sigma} error (Unc_HE_EPeak) ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  nuFnuPk MeV/cm2/s(n) [7e-8/0.0002] {nu}F{nu} at high-energy-peak frequency in MeV/cm2/s (HE_nuFnuPeak) ((unassigned);(unassigned);(unassigned);phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  e_nuFnuPk MeV/cm2/s(n) [2.4e-8/0.00011] nuFnuPk 1{sigma} error (Unc_HE_nuFnuPeak) ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  nu Hz [0/1.8e+20] Synchrotron-peak frequency in the observer frame (nu_syn) ((unassigned);meta.version;arith.diff;instr.spect;time.lifetime)
  nuFnu mW/m2 [0/8e-10] {nu}F{nu} at synchrotron-peak frequency in erg/cm2/s (nuFnu_syn) ((unassigned);meta.version;arith.diff;phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  Var   [1.6/84341] Variability index (Variability_Index) ((unassigned);pos.galactic.lon;arith.factor;pos.wcs.crpix;meta.main)
  fVar   [0/3] Fractional variability (Frac_Variability) ((unassigned);(unassigned);(unassigned);pos.wcs.crpix;meta.main)
  e_fVar   [0.01/10] fVar 1{sigma} error (Unc_Frac_Variability) ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  Emax GeV (n) [10/913] Energy (if greater than 10GeV) of the highest-energy ULTRACLEANVETO photon with association probability P>0.95 (Highest_energy) ((unassigned);(unassigned);(unassigned);(unassigned);pos.lsr;(unassigned);(unassigned))
  Simbad  ask the Simbad data-base about this object ((unassigned);(unassigned);(unassigned);pos.geocentric)

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=846436783 Where phase=3 and catid=22630024
**** 
**** --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 
****error getting UCD 1095216660480 1020
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR109110.err (2026-10-27T17:19:40)
-3
-source=J/ApJS/263/24
-ref=VIZ6ae0dd2e1aa36
elapse time 3