VizieR

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VizieR

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J/ApJS/249/22/epochs Radial velocity variable stars from LAMOST DR4 (Tian+, 2020)
Measurements per epoch (extracted from catalog.dat by CDS) (304473 rows)
  recno=50679
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ColumnValue  Explain   (UCD)
_RAJ200001 57 46.054608 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+38 04 28.43724 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195001 54 46.981202 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+37 49 52.79646 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon137.055552399 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-22.971261938 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
50679recno 50679  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000029.4418942 deg (i) Right ascension (J2000) (RA) (pos.eq.ra;meta.main)
DEJ2000+38.0745659 deg (i) Declination (J2000) (DEC) (pos.eq.dec;meta.main)
JD2456287.979 d Julian Day of exposure of the SpecId (JULS_EPOCH) (time.epoch;obs.exposure)
SNR 194.528   [10/2329] S/N(4650A) per pixel in blue arm of epochs (SNRB_EPOCH) (stat.snr)
RV 77.8 km/s [-968/785] Radial Velocity (RV_EPOCH) (phys.veloc;pos.heliocentric)
e_RV 4.695 km/s [3/21] RV uncertainty (ERRRVEPOCH) (stat.error)
logg 4.13777 [cm/s2] [-1.1/6.42] log of surface gravity (LOGG_EPOCH) (phys.gravity)
e_logg 0.113378 [cm/s2] [0.05/0.42] logg uncertainty (ERRLOGGEPOCH) (stat.error)
Teff 6677.30420 K [3402/23942] Effective temperature (TEFF_EPOCH) (phys.temperature.effective)
e_Teff140.373367 K [58/660] Teff uncertainty (ERRTEFFEPOCH) (stat.error;phys.temperature.effective)
[Fe/H]-0.34714 [-] [-3.7/1.7] Metallicity (FEH_EPOCH) (phys.abund.Z)
e_[Fe/H] 0.149698 [-] [0.05/0.6] Error of [Fe/H] (ERRFEHEPOCH) (stat.error;phys.abund.Fe)
[a/Fe] 0.20396 [-] [-0.4/0.8] Abundance [alpha/Fe] (AFE_EPOCH) (phys.abund)
e_[a/Fe] 0.099140 [-] [0.026/0.3] Error of [alpha/Fe] (ERRAFEEPOCH) (stat.error;phys.abund)
  
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