Analysis of photometric and spectroscopic variability of red supergiant Betelgeuse
D Jadlovský, J Krtička, E Paunzen, V Štefl - New Astronomy, 2023 - Elsevier
Betelgeuse is a pulsating red supergiant whose brightness is semi periodically variable and
in February 2020 reached a historical minimum, the Great Dimming. The aims of this study
are to characterize Betelgeuse's variability based on available archival data and to study
possible causes of light variability. Many spectra, from ultraviolet and optical regions, were
evaluated for spectral analysis. The spectra were used primarily to determine radial
velocities from different layers of atmosphere and their long-term evolution. Additionally …
in February 2020 reached a historical minimum, the Great Dimming. The aims of this study
are to characterize Betelgeuse's variability based on available archival data and to study
possible causes of light variability. Many spectra, from ultraviolet and optical regions, were
evaluated for spectral analysis. The spectra were used primarily to determine radial
velocities from different layers of atmosphere and their long-term evolution. Additionally …
