Stellar Chromospheric Activity Database of Solar-like Stars Based on the LAMOST Low-Resolution Spectroscopic Survey III. Calibrating the Chromospheric Basal Flux and the Connection to Stellar Rotation

we provide the chromospheric activity database for 916,230 solar-like stars observed by LAMOST DR11. The LAMOST $S$ index $S_L$, the scaled $S$ index $S_{\rm MWO}$, the bolometric calibrated index $R_{\rm HK}$, the photospheric calibrated index $R'_{\rm HK}$, and the photospheric and chromospheric basal flux calibrated index $R^+_{\rm HK,L}$ are available in "CAIIHK_Activity_indexes_LAMOST_DR11_LRS.csv". The common stars between the LAMOST LRS catalog and the $S_{\rm MWO}$ catalogs provided by Duncan et al. (1991) (94 stars) and Boro Saikia et al. (2018) (100 stars), are available in "S_L_vs_S_MWO.csv". The chromospheric activity indicators and the rotation period (from Santos et al. 2021, Reinhold et al. 2023 and Fetherolf et al. 2023) for the cross-matched (1 arcsec) 181,004 solar-like stars are available in "CAIIHK_Activity_indexes_Prot.csv".