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/253/19
  Halpha and other EWs of LAMOST M-type stars (Zhang+, 2021)
ReadMe+ftp
2021ApJS..253...19Z
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/253/19/table6Parameters of M stars catalog with repeated LAMOST low-resolution observations (85992 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. (meta.record)
  Seq   [1/85992] Internal object number (meta.id)
  LAMOST (char) LAMOST identifier (JHHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
  SpT (char) Spectral type (src.spType)
  Rep   [2/30] The repeated number of objects (meta.number)
  EWHa-Max 0.1nm [-86/1363] Maximum Hα equivalent width; in Angstrom units (spect.line.eqWidth;stat.max;em.line.Halpha)
  e_EWHa-Max 0.1nm [0/8484] Uncertainty in EWHa-Max (stat.error)
  EWHa-Min 0.1nm [-498/318] Minimum Hα equivalent width; in Angstrom units (spect.line.eqWidth;stat.min;em.line.Halpha)
  e_EWHa-Min 0.1nm [0/8928] Uncertainty in EWHa-Min (stat.error)
  Ratio   [-79107/24178] The EWHa-Max/EWHa-Min ratio (spect.line.eqWidth;arith.diff)
  Diff   [0/1360] The EWHa-Max - EWHa-Min difference (spect.line.eqWidth;arith.diff)
  e_Diff   [0.002/8928] Uncertainty in Diff (stat.error;arith.diff)
  Var (char) [Yes/No ] Variation of Hα line? (meta.code;src.var)
  _RA deg (i) Positions from LAMOST names (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Positions from LAMOST names (declination part) (pos.eq.dec;meta.main)

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