VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN 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. (meta.record)
  Group (char) Latitude grouping (high or low) (meta.id)
  4FGL (char) 4FGL name (JHHMM.m+DDMMa) (Source_Name) (Note 1)   (meta.id;meta.main)
  DR   [1/3] Data release (DataRelease) (Note 2)   (meta.code)
  RAJ2000 deg (i) Right ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  GLON deg Galactic longitude (pos.galactic.lon)
  GLAT deg Galactic latitude (pos.galactic.lat)
  Sig   [2.6/455] Source significance in σ units over the 50MeV to 1TeV band (Signif_Avg) (stat.fit.goodness;arith.ratio)
  F1000i ph/cm2/s [8.9e-12/7.5e-8] Integral photon flux from 1 to 100GeV (Flux1000) (phot.flux.density;em.gamma.hard)
  e_F1000i ph/cm2/s [7.5e-12/4.5e-10] F1000i 1σ error (Unc_Flux1000) (stat.error)

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) (phot.flux.density;em.gamma.hard)
  e_EF100 mW/m2 [1e-13/6.8e-12] EF100 1σ error (Unc_Energy_Flux100) (stat.error)
  Mod (char) Spectral type in the global model; PowerLaw, LogParabola or PLSuperExpCutoff (SpectrumType) (src.spType;meta.modelled)
  PLGam   [1.4/3.2] Photon index when fitting with PowerLaw (PL_Index) (spect.index)
  e_PLGam   [0.003/0.3] PLGam 1σ error (Unc_PL_Index) (stat.error)
  Epiv MeV [241/34572] Pivot energy (Pivot_Energy) (phys.energy)
  LPalpha   [-0.05/3.3] Photon index at Pivot_Energy (α) when fitting with LogParabola (LP_Index) (spect.index)
  e_LPalpha   [0.004/3] LPalpha 1σ error (Unc_LP_Index) (stat.error)
  LPbeta   [-0.12/1] Curvature parameter (β) when fitting with LogParabola (LP_beta) (stat.fit.param)
  e_LPbeta  (n) [0.002/1.8] LPbeta 1σ error (Unc_LP_beta) (stat.error)
  Flags   [0/6144] Analysis flags (Flags) Binary flag; see text and Table 5 for more explanations (meta.code.error)
  Class (char) Class designation for associated source (src.class)
  Assoc1 (char) Name of identified or likely associated source (meta.id.assoc)

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) (stat.fit.goodness)
  ProbLR   [0/1] Probability of association according to the likelihood-ratio method (ASSOC_PROB_LR) (stat.fit.goodness)
  CCat (char) Counterpart catalog driving the association (Counterpart_Catalog) (Note 3)   (meta.id;meta.dataset)
  RACdeg deg Right ascension of the counterpart Assoc1 (J2000) (RA_Counterpart) (pos.eq.ra)
  DECdeg deg Declination of the counterpart Assoc1 (J2000) (DEC_Counterpart) (pos.eq.dec)
  errCPos deg [3.8e-8/2.5] 95% precision of the counterpart localization (Unc_Counterpart) (meta.code.qual;instr.precision)
  RFC (char) Name of the very long baseline interferometry counterpart (VLBI_Counterpart) (meta.id.cross)
  z  (n) [1.7e-5/4.4] Redshift (Redshift) (src.redshift)
  SEDCl (char) SED-based class (SED_class) (src.spType)
  EpkHE MeV (n) [0.04/1.2e+8] Energy in the observer frame of the high-energy SED peak (HE_EPeak) (phys.energy;stat.max)
  e_EpkHE MeV (n) [0.5/5.5e+9] EpkHE 1σ error (Unc_HE_EPeak) (stat.error)
  nuFnuPk MeV/cm2/s(n) [7e-8/0.0002] νFν at high-energy-peak frequency in MeV/cm2/s (HE_nuFnuPeak) (phot.flux.density;em.gamma.hard)
  e_nuFnuPk MeV/cm2/s(n) [2.4e-8/0.00011] nuFnuPk 1σ error (Unc_HE_nuFnuPeak) (stat.error)
  nu Hz [0/1.8e+20] Synchrotron-peak frequency in the observer frame (nu_syn) (em.freq;obs.field)
  nuFnu mW/m2 [0/8e-10] νFν at synchrotron-peak frequency in erg/cm2/s (nuFnu_syn) (phot.flux.density;em.gamma.hard)
  Var   [1.6/84341] Variability index (Variability_Index) (src.var.index)
  fVar   [0/3] Fractional variability (Frac_Variability) (src.var.index)
  e_fVar   [0.01/10] fVar 1σ error (Unc_Frac_Variability) (stat.error)
  Emax GeV (n) [10/913] Energy (if greater than 10GeV) of the highest-energy ULTRACLEANVETO photon with association probability P>0.95 (Highest_energy) (phys.energy;stat.max;em.gamma)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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