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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2023

Surface magnetism in the pulsating RV Tauri star R Scuti

Résumé

We present the surface magnetic field conditions of the brightest pulsating RV Tauri star, R Sct. Our investigation is based on the longest spectropolarimetric survey ever performed on this variable star. The analysis of high resolution spectra and circular polarization data give sharp information on the dynamics of the atmosphere and the surface magnetism, respectively. Our analysis shows that surface magnetic field can be detected at different phases along a pulsating cycle, and that it may be related to the presence of a radiative shock wave periodically emerging out of the photosphere and propagating throughout the stellar atmosphere.
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hal-04098884 , version 1 (16-02-2024)

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Stefan Georgiev, Agnès Lèbre, Eric Josselin, Philippe Mathias, Renada Konstantinova-Antova, et al.. Surface magnetism in the pulsating RV Tauri star R Scuti. Monthly Notices of the Royal Astronomical Society, 2023, 522 (3), pp.3861-3876. ⟨10.1093/mnras/stad1210⟩. ⟨hal-04098884⟩
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