3 papers
astro-ph.SR2020
VLTI-PIONIER imaging of the red supergiant V602 Carinae
J. B. Climent, M. Wittkowski, A. Chiavassa +7
Context. Red supergiant stars possess surface features and extended molecular atmospheres. Photospheric convection may be a crucial factor of the levitation of the outer atmospheri…
astro-ph.SR2018
Tomography of the red supergiant star μ Cep
K. Kravchenko, A. Chiavassa, S. Van Eck +3
A tomographic method, aiming at probing velocity fields at depth in stellar atmospheres, is applied to the red supergiant star μ Cep and to snapshots of 3D radiative-hydrodynamics…
astro-ph.SR2018
Heading Gaia to measure atmospheric dynamics in AGB stars
A. Chiavassa, B. Freytag, M. Schultheis
Context. Asymptotic Giant Branch stars are characterised by complex stellar surface dynamics that affect the measurements and amplify the uncertainties on stellar parameters. The r…