If Proxima was bound to the Alpha Centauri system during its formation, the stars are likely to share the same elemental composition.
The gravitational influence of Proxima might also have stirred up the Alpha Centauri protoplanetary disks.
Convection is associated with the generation and persistence of a magnetic field.
Data from the Hipparcos satellite, combined with ground-based observations, were consistent with the hypothesis that the three stars are a bound system.
For this reason, Proxima is sometimes referred to as Alpha Centauri C. (2017) used high-precision radial velocity measurements to determine with a high degree of confidence that Proxima and Alpha Centauri are gravitationally bound.
The equilibrium temperature of Proxima b is estimated to be within the range of where water could exist as liquid on its surface, thus placing it within the habitable zone of Proxima Centauri, In 1951, American astronomer Harlow Shapley announced that Proxima Centauri is a flare star.
Examination of past photographic records showed that the star displayed a measurable increase in magnitude on about 8% of the images, making it the most active flare star then known.