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Quiescent and active phases in Be stars: A WISE snapshot of young galactic open clusters
A. Granada, C. E. Jones, T. A. A. Sigut +4
Through the modelling of near-infrared photometry of star plus disk systems with the codes BEDISK/BERAY, we successfully describe the WISE photometric characteristics of Be stars i…
Massive stars: stellar models and stellar yields, impact on Galactic Archaeology
Georges Meynet, Arthur Choplin, Sylvia Ekstroem +1
The physics of massive stars depends (at least) on convection, mass loss by stellar winds, rotation, magnetic fields and multiplicity. We briefly discuss the impact of the first th…
Are some CEMP-s stars the daughters of spinstars?
Arthur Choplin, Raphael Hirschi, Georges Meynet +1
CEMP-s stars are long-lived low-mass stars with a very low iron content as well as overabundances of carbon and s-elements. Their peculiar chemical pattern is often explained by po…
Pre-supernova mixing in CEMP-no source stars
Arthur Choplin, Sylvia Ekström, Georges Meynet +3
Context. CEMP-no stars are long-lived low-mass stars with a very low iron content, overabundances of carbon and no or minor signs for the presence of s- or r-elements. Although the…
Star-planet interactions. IV. Possibility of detecting the orbit-shrinking of a planet around a red giant
Georges Meynet, Patrick Eggenberger, Giovanni Privitera +4
The surface rotations of some red giants are so fast that they must have been spun up by tidal interaction with a close companion, either another star, a brown dwarf, or a planet.…
The evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates of LIGO/Virgo binary black holes
K. Belczynski, J. Klencki, C. E. Fields +31
All ten LIGO/Virgo binary black hole (BH-BH) coalescences reported from the O1/O2 runs have near zero effective spins. There are only three potential explanations of this fact. If…