Proxima

The discovery of a planet orbiting Proxima Centauri is a good pretext to recall basic information on the closest star to our Sun. How was it discovered? What are its basic physical properties? Can we tell something about star magnetic activity on the basis of observations of the Proxima activity cycle? What is known about Proxima b? What are parameters of the alfa Centauri - Proxima triple system?

All interested persons are invited
Agnieszka Majczyna