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 R′HK,classic | |
| log_R_p_HK_classic_err* | Uncertainty of log R′HK,classic | |
| log_R_HK_PHOENIX* | log RHK,PHOENIX | |
| log_R_HK_PHOENIX_err* | Uncertainty of log RHK,PHOENIX | |
| log_R_p_HK_PHOENIX* | log R′HK,PHOENIX | |
| log_R_p_HK_PHOENIX_err* | Uncertainty of log R′HK,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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