Magnetic activities on two single-lined RS Canum Venaticorum binaries IM Pegasi and $\sigma$ Geminorum

Dongtao Cao, Shenghong Gu, F. Grundahl +1

We present the study on continuous high-resolution spectroscopic observations of two long-period single-lined RS Canum Venaticorum (RS CVn) binary stars IM Pegasi (IM Peg) and $\sigma$…