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/MNRAS/495/1252
  Magnetic activity based on LAMOST and Kepler (Zhang+, 2020)
ReadMe+ftp
2020MNRAS.495.1252Z
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/495/1252/table2The EWs of H{alpha} line for LAMOST DR6/DR7 medium-resolution spectra (2091658 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);meta.version;arith.diff;phys.veloc)
  More (char) Link to tables 4, 5 and 6 ((unassigned);arith;(unassigned);pos.geocentric)
  Name (char) (i) Source name (JHHMMSS.ss+DDMMSS.s) ((unassigned);(unassigned);(unassigned);spect.line.veloc;arith)
  RAJ2000 deg (i) Right ascension (J2000) ((unassigned);meta.version;arith.diff;(unassigned);arith)
  DEJ2000 deg (i) Declination (J2000) ((unassigned);meta.version;arith.diff;(unassigned);arith)
  Date "Y:M:D" (n)(i) Observation date ((unassigned);meta.version;arith.diff;pos.centroid;stat.param)
  MJM min Modified Julian minute (time.expo;meta.ref.pid;arith.grad;pos.centroid;meta.main)
  S/N  Signal to noise ratio ((unassigned);meta.version;arith.diff;meta.abstract;meta.main)
  SpType (char) Spectral type ((unassigned);meta.version;arith.diff;pos.posAng;meta.main)
  Prot d (n) Rotation period from Kepler and K2 with the Lomb-Scargle method ((unassigned);meta.version;arith.diff;phys.dust;meta.main)
  EWHa 0.1nm (n) H{alpha} equivalent width (Note G1)   ((unassigned);stat.error;arith.factor;phys.at.moment.magnetic;meta.main)
  e_EWHa 0.1nm Error on EWHa ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  Emis (char) [YN] Indicates whether there is emission ((unassigned);meta.version;arith.diff;pos.eq.dec)
  Var (char) [YNO] Indicates whether there is variation ('Y' for yes, 'N' for no, 'O' for one observation) ((unassigned);meta.version;arith.diff;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=846537304 Where phase=3 and catid=74951252
**** 
**** --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/VR3449625.err (2026-10-28T21:15:03)
-3
-source=J/MNRAS/495/1252/table2
-ref=VIZ6ae265d834a319
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