3 papers
astro-ph.SR2025
Spectropolarimetric characterisation of exoplanet host stars in preparation of the mission II. The magnetised wind environment of TOI-1860, DS Tuc A, and HD 63433
S. Bellotti, A. Lavail, D. Evensberget +10
We update the status of the spectropolarimetric campaign dedicated to characterise the magnetic field properties of a sample of known exoplanet-hosting stars included in the curren…
astro-ph.SR2025
First images of Antares photosphere from spectropolarimetry
Quentin Pilate, Eric Josselin, Agnès Lèbre +3
Antares is the closest red supergiant (RSG) to Earth. The discovery of linear polarization in the atomic lines of the star opens the path to produce direct images of the photospher…
astro-ph.SR2024
The variability of Betelgeuse explained by surface convection
Quentin Pilate, Arturo López Ariste, Alexis Lavail +1
Context. Betelgeuse is a red supergiant (RSG) that is known to vary semi-regularly on both short and long timescales. The origin of the short period of Betelgeuse has often been as…