Magnetic activity variability from Hα line intensive monitoring of two F-type stars with a hot Jupiter, τ Bootis A and υ Andromedae A

We report the results of intensive monitoring variability in H$\alpha$ line for two F-type stars, $\tau$ Boo and $\upsilon$ And, during last four years 2019-2022, order to investigate their stellar magnetic activity. The 4-year intensity data taken with 1.88-m reflector at Okayama Branch Office, Subaru Telescope, shows existence a possible $\sim$ 123-day activity cycle Boo. result as another tracer on chromosphere is consistent previous studies Ca II H&K suggests that persisted For we suggest quadratic long-term trend variability. Meanwhile, short-term no significant period corresponding specific variations likely induced by hot-Jupiter both cases ($\approx$ 3.31 4.62 days, respectively). In this observation, could not find any signature Star-Planet Magnetic Interaction. It speculated detected stars related intrinsic dynamo.