VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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/249/22
  Radial velocity variable stars from LAMOST DR4 (Tian+, 2020)
ReadMe+ftp
2020ApJS..249...22T
Similar Catalogs
timeSerie
Post annotation 		img(gal)
1.J/ApJS/249/22/epochsMeasurements per epoch (extracted from catalog.dat by CDS) (304473 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);(unassigned);(unassigned);phys.veloc)
  RAJ2000 deg (i) Right ascension (J2000) (RA) ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);arith)
  DEJ2000 deg (i) Declination (J2000) (DEC) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  JD d (i) Julian Day of exposure of the SpecId (JULS_EPOCH) ((unassigned);em.line;arith.grad;pos.centroid;(unassigned);meta.main)
  SNR  (n) [10/2329] S/N(4650A) per pixel in blue arm of epochs (SNRB_EPOCH) ((unassigned);(unassigned);(unassigned);meta.abstract;meta.main)
  RV km/s (n) [-968/785] Radial Velocity (RV_EPOCH) ((unassigned);(unassigned);(unassigned);spect.index;arith.diff;meta.main)
  e_RV km/s (n) [3/21] RV uncertainty (ERRRVEPOCH) ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  logg [cm/s2] (n) [-1.1/6.42] log of surface gravity (LOGG_EPOCH) ((unassigned);(unassigned);(unassigned);(unassigned))
  e_logg [cm/s2] (n) [0.05/0.42] logg uncertainty (ERRLOGGEPOCH) ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  Teff K (n) [3402/23942] Effective temperature (TEFF_EPOCH) ((unassigned);(unassigned);(unassigned);em.radio)
  e_Teff K (n) [58/660] Teff uncertainty (ERRTEFFEPOCH) ((unassigned);(unassigned);(unassigned);time.age;em.radio.20-100MHz)
  [Fe/H] [-] (n) [-3.7/1.7] Metallicity (FEH_EPOCH) ((unassigned);(unassigned);(unassigned);pos.emergenceAng)
  e_[Fe/H] [-] (n) [0.05/0.6] Error of [Fe/H] (ERRFEHEPOCH) ((unassigned);phys.veloc.orbital;arith.diff;time.age;phys.reflectance.bidirectional)
  [a/Fe] [-] (n) [-0.4/0.8] Abundance [alpha/Fe] (AFE_EPOCH) ((unassigned);phys.veloc.orbital;arith.diff;phys.polarization.stokes.Q)
  e_[a/Fe] [-] (n) [0.026/0.3] Error of [alpha/Fe] (ERRAFEEPOCH) ((unassigned);(unassigned);(unassigned);time.age;phys.polarization.stokes.U)

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=846442286 Where phase=3 and catid=22490022
**** 
**** --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/VR178472.err (2026-10-27T18:51:24)
-3
-source=J/ApJS/249/22/epochs
-ref=VIZ6ae0f2ad2b928
elapse time 2