Gf. Benedict et al., PERIODIC LOW-AMPLITUDE VARIATIONS IN THE BRIGHTNESS OF PROXIMA-CENTAURI, Publications of the Astronomical Society of the Pacific, 105(687), 1993, pp. 487-493
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
Using data acquired with Fine Guidance Sensor #3 on board the Hubble S
pace Telescope we find that the brightness of Proxima Centauri varies
with an amplitude of 0.01 mag and a period P=41.6+/-0.6 days. We inter
pret this variation as rotational modulation of star spots or bright r
egions in the photosphere of Proxima Cen. In a total of 89.36 min of m
onitoring over 212 days, we detected one major flare and three post-fl
are brightenings.