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296 papers · 1 filter
A new dimension in the variability of AGB stars: convection patterns size changes with pulsation
A. Rosales-Guzmán, J. Sanchez-Bermudez, C. Paladini +16
Stellar convection plays an important role in atmospheric dynamics, wind formation and the mass-loss processes in Asymptotic Giant Branch (AGB) stars. However, a direct characteriz…
The inner dust shell of Betelgeuse detected by polarimetric aperture-masking interferometry
X. Haubois, B. Norris, P. G. Tuthill +9
Theory surrounding the origin of the dust-laden winds from evolved stars remains mired in controversy. Characterizing the formation loci and the dust distribution within approximat…
A Spectroscopic Survey of the Youngest Field Stars in the Solar Neighborhood. II. The optically faint sample
A. Frasca, P. Guillout, A. Klutsch +5
Star formation in the solar neighborhood is mainly traced by young stars in open clusters, associations and in the field, which can be identified by their X-ray emission. The deter…
Magnetic fields of intermediate mass T Tauri stars
A. Lavail, O. Kochukhov, G. A. J. Hussain +3
Aims. In this paper, we aim to measure the strength of the surface magnetic fields for a sample of five intermediate mass T Tauri stars and one low mass T Tauri star from late-F to…
The convective surface of the red supergiant Antares. VLTI/PIONIER interferometry in the near infrared
M. Montargès, A. Chiavassa, P. Kervella +4
Context. Convection is a candidate to explain the trigger of red supergiant star mass loss. Owing to the small size of the convective cells on the photosphere, few of their charact…
Orbit of the Mercury-Manganese binary 41 Eridani
C. A. Hummel, M. Schoeller, G. Duvert +1
Context. Mercury-manganese (HgMn) stars are a class of slowly rotating chemically peculiar main-sequence late B-type stars. More than two-thirds of the HgMn stars are known to belo…