Magnetic activity of red giants in binaries from Gaulme et al. (2020) identified by Gaia DR3 as a function of the orbital period. RGB stars are represented in red, RC stars in green, red giants with an unidentified evolutionary stage in blue, non-oscillating red giants from Gaulme et al. (2020) in black, and red giants from Gaulme et al. (2014), Benbakoura et al. (2021) in magenta. Top panel: S-index S_CaII. Bottom panel: Photometric index S_ph as measured by Gaulme et al. (2020).