Temporal evolution of the size and temperature of Betelgeuse’s extended atmosphereE. O’Gorman, G. M. Harper, A. Brown, E. F. Guinan, A. M. S. Richards, W. Vlemmings and R. WasatonicA&A, 580 (2015) A101DOI: https://doi.org/10.1051/0004-6361/201526136
