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30 papers · 2 filters
Asteroseismology of evolved stars to constrain the internal transport of angular momentum. I. Efficiency of transport during the subgiant phase
P. Eggenberger, S. Deheuvels, A. Miglio +9
Context: The observations of solar-like oscillations in evolved stars have brought important constraints on their internal rotation rates. To correctly reproduce these data, an eff…
Comprehensive stellar seismic analysis : New method exploiting the glitches information in solar-like pulsators
M. Farnir, M-A. Dupret, S. J. A. J. Salmon +2
Aims: We develop a method that provides a comprehensive analysis of the oscillation spectra of solar-like pulsators. We define new seismic indicators that should be as uncorrelated…
A remarkable change of the spectrum of the magnetic Of?p star HD 148937 reveals evidence of an eccentric, high-mass binary
G. A. Wade, J. V. Smoker, C. J. Evans +10
We report new spectroscopic observations of the magnetic Of?p star HD 148937 obtained since 2015 that differ qualitatively from its extensive historical record of weak, periodic sp…
High-Resolution ALMA Observations of HD100546: Asymmetric Circumstellar Ring, and Circumplanetary Disk Upper Limits
J. E. Pineda, J. Szulágyi, S. P. Quanz +7
We present long baseline Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 870m dust continuum emission and CO (3-2) from the protoplanetary disk around…
Extreme resonance line profile variations in the ultraviolet spectra of NGC 1624-2: probing the giant magnetosphere of the most strongly magnetized known O-type star
A. David-Uraz, C. Erba, V. Petit +12
In this paper, we present high-resolution HST/COS observations of the extreme magnetic O star NGC 1624-2. These represent the first ultraviolet spectra of this archetypal object. W…
Calibration of the mixing-length parameter for the MLT and FST models by matching with COBOLD models
T. Sonoi, H. -G. Ludwig, M. -A. Dupret +5
The CoRoT and Kepler missions provided a wealth of high-quality data for solar-like oscillations. To make the best of such data for seismic inferences, we need theoretical models w…