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/274/36
  Magnetic activity from LAMOST DR9, Gaia & TESS (Li+, 2024)
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2024ApJS..274...36L
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/274/36/mdwarfsStellar parameters of M dwarf stars from LAMOST DR9 spectra (Table 1) and calculation parameters (Table 2) (781232 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);phys.veloc.orbital;arith.diff;phys.veloc)
  Var (char) H{alpha} variation from LAMOST DR9 LRS data (link to Table 3) ((unassigned);(unassigned);(unassigned);pos.geocentric)
  LAMOST (char) (i) LAMOST DR9 position-based Name (Note G1)   ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  m_LAMOST  (n)Number of observations for this LAMOST source ((unassigned);(unassigned);(unassigned);pos.posAng)
  RAJ2000 deg (i) LAMOST DR9 Right Ascension (J2000) (Note G1)   ((unassigned);obs.atmos;arith.factor;(unassigned);arith)
  DEJ2000 deg (i) LAMOST DR9 Declination (J2000) (Note G1)   ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  SNR  (n) [0/822] LAMOST DR9 spectrum signal-to-noise ratio (Note G1)   ((unassigned);pos.wcs.naxis;arith.grad;meta.abstract;meta.main)
  EWHa 0.1nm (n) [-1499/2682] LAMOST DR9 H{alpha} equivalent width in angstroms (Note G1)   (obs.param;obs.atmos;arith.factor;phys.at.moment.magnetic;meta.main)
  e_EWHa 0.1nm (n) [0/713467] Uncertainty in EWHa (Note G1)   ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  SpT (char) Spectral type subclass (Note G1)   ((unassigned);phys.veloc.orbital;arith.diff;pos.posAng;meta.main)
  z (char) Redshift (Note G1)   ((unassigned);(unassigned);(unassigned);pos.parallax;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Fe/H [-] (n) [-2.5/0.5] LAMOST DR9 metallicity (Note G1)   (time.expo.start;phys.atmol.qn.I;arith.grad;pos.emergenceAng)
  e_Fe/H [-] (n) [0.08/0.9] Uncertainty in FeH (Note G1)   (stat.error.sys;(unassigned);stat.min;time.age;phys.reflectance.bidirectional)
  Teff K (n) [2300/4300] LAMOST DR9 surface effective temperature (Note G1)   ((unassigned);stat.covariance;arith.factor;em.radio)
  e_Teff K (n) [45/424] Uncertainty in Teff (Note G1)   ((unassigned);(unassigned);(unassigned);time.age;em.radio.20-100MHz)
  logg [cm/s2] (n) [-0.5/6] LAMOST DR9 log of surface gravity (Note G1)   ((unassigned);(unassigned);(unassigned);(unassigned))
  e_logg [cm/s2] (n) [0.07/1] Uncertainty in logg (Note G1)   ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  CV  (n) [3.3e-06/2] Coefficient of variation, this work ((unassigned);phys.veloc.orbital;arith.diff;pos.wcs.crpix;meta.main)
  pmRA mas/yr (n) [-661/814] Gaia DR3 (Epoch=2016.0) proper motion in RA (phot.color;(unassigned);arith.grad;instr.offset;(unassigned))
  e_pmRA mas/yr (n) [0.005/2.5] Uncertainty in pmRA ((unassigned);(unassigned);(unassigned);time.age;instr.param;(unassigned))
  pmDE mas/yr (n) [-1107/368] Gaia DR3 (Epoch=2016.0) proper motion in Dec ((unassigned);phys.veloc.orbital;arith.diff;instr.offset;(unassigned))
  e_pmDE mas/yr (n) [0.007/3] Uncertainty in pmDE ((unassigned);phys.veloc.orbital;arith.diff;time.age;instr.param;(unassigned))
  Mark (char) Activity indicator, Yes=Star is active ((unassigned);(unassigned);(unassigned);pos.eq.dec)
  Rad kpc (n) [2/22] Star galactic radius, projected onto the midplane ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  Z kpc (n) [-17.4/32.1] Stellar galactic scale height ((unassigned);phys.veloc.orbital;arith.diff;phys.atmol.sweight;)
  Per d (n) [0.01/437] Period, based on VSX and TESS ((unassigned);phys.veloc.orbital;arith.diff;phys.dust;meta.main)
  Mstar Msun (n) [0.1/2.3] Mass from TESS Input Catalog v8.0 ((unassigned);phys.veloc.orbital;arith.diff;(unassigned))
  Ro  (n) [5.9e-05/13.3] Rossby number ((unassigned);phys.veloc.orbital;arith.diff;time.obs.end;meta.main)
  RHa  (n) [-0.2/0.002] Chromospheric H{alpha} activity index, Equation 1 ((unassigned);(unassigned);(unassigned);phys.abund.Y;meta.main)
  e_RHa  (n) [0/0.01] Uncertainty in RHa ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  EWHb 0.1nm (n) [-11739/1443099] H{beta} equivalent width in angstroms ((unassigned);stat.Fourier.amplitude;arith.factor;phys.at.moment.magnetic;meta.main)
  e_EWHb 0.1nm (n) [0.005/8383] Uncertainty in EWHb ((unassigned);(unassigned);(unassigned);time.age;meta.main)

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=846436874 Where phase=3 and catid=22740036
**** 
**** --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/VR113546.err (2026-10-27T17:21:13)
-3
-source=J/ApJS/274/36/mdwarfs
-ref=VIZ6ae0dd8a1bb8a
elapse time 1