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Table 3

Columns in the catalog of the database.

Column Unit Description
obsid Unique observation identifier of LAMOST LRS spectrum
obsdate Spectral observation date
fitsname FITS file name of LAMOST LRS spectrum
snrg Signal-to-noise ratio in the g band (S/Ng) of LAMOST LRS spectrum
snrr Signal-to-noise ratio in the r band (S/Nr) of LAMOST LRS spectrum
teff K Effective temperature (Teff) derived from the LASP
teff_err K Uncertainty of Teff derived from the LASP
logg dex Surface gravity (log g) derived from the LASP
logg_err dex Uncertainty of log g derived from the LASP
feh dex Metallicity ([Fe/H]) derived from the LASP
feh_err dex Uncertainty of [Fe/H] derived from the LASP
rv km s−1 Radial velocity (Vr) derived from the LASP
rv_err km s−1 Uncertainty of Vr derived from the LASP
ra_obs degree Right ascension (RA) of fiber pointing
dec_obs degree Declination (DEC) of fiber pointing
gaia_source_id Source identifier in Gaia DR3 catalog
gaia_g_mean_mag G magnitude in Gaia DR3 catalog
S_tri* Stri index of LAMOST LRS
S_tri_err* Uncertainty of Stri
S_MWO* SMWO
S_MWO_err* Uncertainty of SMWO
log_R_HK_classic* log RHK,classic
log_R_HK_classic_err* Uncertainty of log RHK,classic
log_R_p_HK_classic* log RHK,classic
log_R_p_HK_classic_err* Uncertainty of log RHK,classic
log_R_HK_PHOENIX* log RHK,PHOENIX
log_R_HK_PHOENIX_err* Uncertainty of log RHK,PHOENIX
log_R_p_HK_PHOENIX* log RHK,PHOENIX
log_R_p_HK_PHOENIX_err* Uncertainty of log RHK,PHOENIX

Notes. The columns denoted by an asterisk represent the parameters estimated in this work, and the remaining columns utilized in our research are collected from the data release of LAMOST DR8 V2.0. The detailed definitions of the chromospheric activity parameters can be seen in Sect. 3.

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