VizieR

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VizieR

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J/ApJS/264/12
  Chromospheric activities from LAMOST and K2 (Han+, 2023)
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2023ApJS..264...12H
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/264/12/param(c)All the quantities calculated from the Medium-Resolution data (Table 3) and Low-Resolution data (Table 4) together with stellar parameters (3234 rows)
2.J/ApJS/264/12/ews(c)Medium-resolution (Table 1) and Low-resolution (Table 2) EWs of the Hα lines (184226 rows)
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Simple ConstraintList Of Constraints
 
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)Q (char) Medium-Resolution (MRS) or Low-Resolution (LRS) data (meta.code.qual)
   (ALL)LAMOST (char) LAMOST identifier (JHHMMSS.ss+DDMMSS.s) (meta.id;meta.main)
  (1)New  (n)Number of equivalent widths measurements for this source (link to Tables 1+2) (meta.number)
  (1)m_LAMOST  (n)"2" if data in both MRS and LRS tables; "1" otherwise (meta.ref.url)
  (1)EWHa 0.1nm (n) [-6.7/1] Hα equivalent width, EW' (Note 1)   (spect.line.eqWidth)
  (1)e_EWHa 0.1nm (n) [0/0.7] Uncertainty in EWHa (Note 1)   (stat.error)
  (1)logRHa [-] (n) [-8.5/-3.2] Log of RHa index, log (R'Hα) (Note 1)   (phys.luminosity;arith.ratio)
  (1)e_logRHa [-] (n) [4/7] Uncertainty in logRHa (Note 1)   (stat.error)
  (1)DlogRHa [-] (n) [0/1.2] Variability of logRHa (Note 1)   (src.var.index)
  (1)EWpHa 0.1nm (n) [-7.7/0.3] Hα equivalent width, EW+ (Note 2)   (spect.line.eqWidth)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_EWpHa 0.1nm (n) [0/0.7] Uncertainty in EWpHa (Note 2)   (stat.error)
  (1)logRpHa [-] (n) [-7/-3.2] Log of RHa index, log (R+Hα) (Note 2)   (phys.luminosity;arith.ratio)
  (1)e_logRpHa [-] (n) [4/7] Uncertainty in logRpHa (Note 2)   (stat.error)
  (1)DlogRpHa [-] (n) [0/0.7] Variability of logRpHa (Note 2)   (src.var.index)
  (1)Teff K [3366/8490] Effective temperature (phys.temperature.effective)
  (1)logg [cm/s2] [3.5/4.9] Log surface gravity (phys.gravity)
  (1)[Fe/H] [Sun] [-2.5/0.6] Metallicity (phys.abund.Z)
  (1)log(x) [-] [-4.2/-3.9] Log of χ (Note 3)   (phot.flux;arith.ratio)
  (1)tauC d (n) [2.7/139] Convective turnover time (time.scale)
  (1)PRot d (n) [0.29/30.58] Rotational period (time.period)
  (1)DR4+DR7  (n)Display the LAMOST -DR4 (V/153) and -DR7 (V/156) within 0.5" (meta.ref.url)
  (1)Z20  (n)Display data from LAMOST-K2 1st year (Zong+ 2020, J/ApJS/251/15) (meta.ref.url)
  (1)K2 (char) Display the K2 EPIC data (IV/34) within 3" (meta.ref.url)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)_RA deg (i) Positions from LAMOST names (right ascension part) (pos.eq.ra;meta.main)
   (ALL)_DE deg (i) Positions from LAMOST names (declination part) (pos.eq.dec;meta.main)
  (2)Param  (n)Display all the parameters for this source (Tables 3+4) (meta.ref.url)
  (2)EW 0.1nm (n) [-180/21936] Equivalent width; Angstroms (spect.line.eqWidth)
  (2)e_EW 0.1nm (n) [0/250977] Uncertainty in EW (stat.error;spect.line.eqWidth)
  (2)BMJD d (i) [58784.6/58950.6] Barycentric Modified Julian Date (time.epoch)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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