From ESO’s press release, interest in our neighbouring Alpha Centauri star system has been particularly high since the recent discovery of an Earth-mass planet, known as Proxima b, orbiting the system’s third star — and the closest star to the Sun — Proxima Centauri. While the system’s larger stellar pair, Alpha Centauri A and B, appear to have a proper motion on the sky that is very similar to that of the smaller, fainter Proxima Centauri, it has not been possible to demonstrate that the three stars do actually form a single, gravitationally bound, triple system.
Now three astronomers, Pierre Kervella, Frédéric Thévenin and Christophe Lovis, have concluded that the three stars do indeed form a bound system, see their article Proxima’s orbit around Alpha Centauri.
See ESA’s announcement.
Many scientists from OCA have contributed to this achievement.
In MAUCA the following METEOR are linked to GAIA:
On Tuesday, November 8, the Journée Scientifique de l’Observatoire de la Côte d’Azur will take place in Cannes. The lecture @ TAS by R. Krawczyk, initially planned on November 8, is shifted to Wednesday 9 so that MAUCA students can attend the JSOCA.
and can be found here.
MICROSCOPE and the universality of free fall are under focus in one METEOR proposed by the scientific PI of MICROSCOPE, G. Métris.