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- Centre National de la Recherche ScientifiqueFR456 papers
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131 papers · 1 filter
Massive stellar cannibals: How stellar mergers drive mass-loss in extremely massive stars
J. Roman-Garza, T. Fragos, C. Charbonnel +3
It has been theorized that the formation of extremely massive and supermassive stars () could plausibly be the outcome of stellar mergers in low metallicity (…
Structure and Dynamics of the Sun's Interior Revealed by Helioseismic and Magnetic Imager
Alexander Kosovichev, Sarbani Basu, Yuto Bekki +43
High-resolution helioseismology observations with the Helioseismic and Magnetic Imager (HMI) onboard Solar Dynamics Observatory (SDO) provide a unique three-dimensional view of the…
Acoustic modes in M67 cluster stars trace deepening convective envelopes
Claudia Reyes, Dennis Stello, Joel Ong +3
Acoustic oscillations in stars are sensitive to stellar interiors. Frequency differences between overtone modes -- large separations -- probe stellar density, while differences bet…
The robustness of inferred envelope and core rotation rates of red-giant stars from asteroseismology
F. Ahlborn, E. P. Bellinger, S. Hekker +2
Rotation is an important, yet poorly-modelled phenomenon of stellar structure and evolution. Accurate estimates of internal rotation rates are therefore valuable for constraining s…
Time Variation of the Solar Tachocline
Sarbani Basu, Wesley Antônio Machado Andrade de Aguiar, Sylvain G. Korzennik
We have used solar oscillation frequencies and frequency splittings obtained over solar cycles 23, 24 and the rising phase of solar cycle 25 to investigate whether the tachocline p…
An Expanded Set of Los Alamos OPLIB Tables in MESA: Type-1 Rosseland-mean Opacities and Solar Models
Ebraheem Farag, Christopher J. Fontes, F. X. Timmes +11
We present a set of 1194 Type-1 Rosseland-mean opacity tables for four different metallicity mixtures. These new Los Alamos OPLIB atomic radiative opacity tables are an order of ma…