Magnetic activity variability of nearby bright Sun-like stars by 4-year intensive H$\alpha$ line monitoring

Sanghee Lee, Yuta Notsu, Bun'ei Sato

We report intensive monitoring of the activity variability in the H$\alpha$ line for 10 Sun-like stars using the 1.88-m reflector at Okayama Branch Office, Subaru Telescope, during the…