930 citations · 3.8k across the 54 of their papers we have counts for
54 papers
Global 3D radiation-hydrodynamical models of AGB stars with dust-driven winds
Bernd Freytag, Susanne Höfner
Convection and mass loss by stellar winds are two dynamical processes that shape asymptotic giant branch (AGB) stars and their evolution. Observations and earlier 3D models indicat…
Properties of self-excited pulsations in 3D simulations of AGB stars and red supergiants
Arief Ahmad, Bernd Freytag, Susanne Höfner
The characteristic variability of cool giants and supergiants is attributed to a combination of stellar pulsation and large-scale convective flows. Full 3D radiation-hydrodynamical…
Probing Red Supergiant dynamics through photo-center displacements measured by Gaia
A. Chiavassa, R. Kudritzki, B. Davies +2
Red supergiant (RSGs) are cool massive stars in a late phase of their evolution when the stellar envelope becomes fully convective. They are the brightest stars in the universe at…
Explaining the winds of AGB stars: Recent progress
Susanne Höfner, Bernd Freytag
The winds observed around asymptotic giant branch (AGB) stars are generally attributed to radiation pressure on dust, which is formed in the extended dynamical atmospheres of these…
The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE
A. Chiavassa, K. Kravchenko, M. Montargès +50
Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification. Aims. We aim to spatially resolve t…
Atmosphere of Betelgeuse before and during the Great Dimming event revealed by tomography
K. Kravchenko, A. Jorissen, S. Van Eck +7
Despite being the best studied red supergiant star in our Galaxy, the physics behind the photometric variability and mass loss of Betelgeuse is poorly understood. Moreover, recentl…