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/ApJ/743/171
  The 2LAC catalog (Ackermann+, 2011)
ReadMe+ftp
2011ApJ...743..171A
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/743/171/2LAC(c)2LAC catalog: high latitude (tables 3 and 7) and low-latitude sources ((tables 4 and 8) (1121 rows)
2.J/ApJ/743/171/table6(c)1LAC sources missing in 2LAC (45 rows)
3.J/ApJ/743/171/table9Properties of the TeV AGNs detected by the Fermi LAT (40 rows)

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);meta.version;arith.diff;phys.veloc)
  (1)S (char) Sample: Low-latitude (|b|<10°) or High-latitude ((unassigned);meta.version;arith.diff;spect.line.veloc)
   (1+3)2FGL (char) (i) Name of the 2FGL source (JHHMM.m+DDMM) ((unassigned);(unassigned);(unassigned);spect.line.veloc;arith)
  (1)T (char) T indicates TeV-sources (properties in table 9) ((unassigned);(unassigned);(unassigned);pos.geocentric)
   (ALL)Cl? (char) [NY] Source in Clean sample: Y=Yes, N=No ((unassigned);meta.version;arith.diff;pos.eq.dec)
  (1)List (char) [NY] Source in 2FGL list: Y=Yes, N=No ((unassigned);meta.version;arith.diff;pos.eq.dec)
  (1)CName (char) Name of the counterpart ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (1+2)RAJ2000 deg Counterpart right ascension (J2000) ((unassigned);meta.version;arith.diff;(unassigned);arith)
  (1+2)DEJ2000 deg Counterpart declination (J2000) ((unassigned);meta.version;arith.diff;(unassigned);arith)
  (1)Sep deg [0.001/0.454] 2FGL and its counterpart angular separation ((unassigned);(unassigned);(unassigned);em.radio.6-12GHz;instr.background)
  (1)ePos deg [0.01/0.387] The 95% error radius ((unassigned);meta.version;arith.diff;time.age;meta.main)

ALL cols		    
 (i)indexed column
  (1+2)OType (char) Optical object type (Note G1)   ((unassigned);meta.version;arith.diff;(unassigned);(unassigned);(unassigned))
   (ALL)SED (char) Type of SED; "-" indicates a NULL value (Note G2)   ((unassigned);meta.version;arith.diff;phys.veloc.orbital)
   (ALL)z  (n) [0/3.215] Redshift (Note 1)   ((unassigned);meta.version;arith.diff;pos.parallax;meta.main)
  (1)SpI   [1.12/3] Spectral Index {alpha} ((unassigned);(unassigned);(unassigned);phys.abund.Y;meta.main)
  (1)e_SpI  Error in SpInd ((unassigned);meta.version;arith.diff;time.age;meta.main)
  (1+2)pr  (n) The Bayesian probability of counterpart ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  (1)NSpr  (n) The logN-logS probability of counterpart ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  (1)RGpr  (n) Likelihood ratio reliability for Radio-Gamma association ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  (1)XGpr  (n) Likelihood ratio reliability for X-Gamma association ((unassigned);meta.version;arith.diff;phys.polarization.circular;meta.main)
  (1)SimbadName (char) Designation understandable by the Simbad data-base ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (1)TS  Test Statistics: significance ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  (1)RFlux mJy (n) [4/138488] Radio flux ((unassigned);(unassigned);(unassigned);phys.atmol.sWeight.nuclear;stat.interval;(unassigned))
  (1)XFlux 10-16W/m2(n) [0.26/7640] X-ray flux; in units of 10–13erg/cm2/s ((unassigned);meta.version;arith.diff;meta.abstract;(unassigned);(unassigned))

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)Vmag1 mag (n) [8.08/23.15] USNO V band magnitude ((unassigned);meta.version;arith.diff;stat.filling;(unassigned);(unassigned))
  (1)Vmag2 mag (n) SDSS V band magnitude ((unassigned);(unassigned);(unassigned);stat.filling;(unassigned);(unassigned))
  (1)aox  (n) Rest frame, multi-frequency optical/X-ray spectral index (between 5000Å and 1keV) (Note 1)   ((unassigned);(unassigned);(unassigned);phys.abund.Y;meta.main)
  (1)aro  (n) Rest frame, multi-frequency radio/optical spectral index (between 5GHz and 5000Å) (Note 1)   ((unassigned);(unassigned);(unassigned);phys.abund.Y;meta.main)
  (2)1FGL (char) 1FGL source name (JHHMM.m+DDMM) ((unassigned);meta.version;arith.diff;spect.line.veloc;arith)
  (2)1LAC (char) 1LAC counterpart name ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (2)Note (char) [S] S: the 1FGL source is associated with exactly one AGN ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (2)Flag (char) 1LAC flag(s) (Note 1)   ((unassigned);(unassigned);(unassigned);pos.galactic.lon)
  (2)Simbad (char) ask the Simbad data-base about this object ((unassigned);(unassigned);(unassigned);phys.veloc.dispersion)
  (3)Name (char) TeV name ((unassigned);(unassigned);(unassigned);src.class.color)
  (3)n_Name (char) [*s, ] Individual notes (Note 2)   ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)
  (3)Type (char) Object type (Note G1)   ((unassigned);(unassigned);(unassigned);phys.atmol.sweight;meta.main)
  (3)f_z (char) [cde, ] Flag on z (Note 2)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (3)Sp (char) Shape of the best-fit spectrum (PL=power law or LP=LogParabola) ((unassigned);(unassigned);(unassigned);pos.posAng;src.orbital.meanAnomaly)
  (3)1LAC? (char) [YL] In the 1LAC? (Note 3)   ((unassigned);(unassigned);(unassigned);pos.eq.dec)

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=846440292 Where phase=3 and catid=17430171
**** 
**** --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=846440292 Where phase=3 and catid=17430171
**** 
**** --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/VR146101.err (2026-10-27T18:18:12)
-3
-source=J/ApJ/743/171
-ref=VIZ6ae0eae423ab5
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