Stars: Activity Stars: activity 8 Stars 6 Astrophysics 4 Photometry 4 Starspots 4 Activation analysis 2 Astronomy 2 Atmospherics 2 Binaries: Close 2 Binaries: close 2 Chromophores 2 Chromospheric activity 2 Correlation methods 2 Detecting activities 2 Earth (planet) 2 Fluxes 2 Iron compounds 2 Lomb-scargle periodogram 2 Open clusters and associations: individual:βPictoris association 2 Orbits 2 Pictoris 2 Planets 2 Planets and satellites: Detection 2 Planets and satellites: Fundamental parameters 2 Planets and satellites: detections 2 Planets and satellites: fundamental parameters 2 Proxima centauri 2 Rotation 2 Satellites 2