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astro-ph.SR2025
Apsidal motion in massive binaries
Sophie Rosu
One of the most efficient and reliable observational technique allowing to probe the internal structure of a star is the determination of the apsidal motion in close eccentric bina…
astro-ph.SR2025
Apsidal Motion in O-Star Binaries: GENEC rotating binary models put to the k2-test
Sophie Rosu, Luca Sciarini, Sylvia Ekström +1
Unveiling massive stars' internal structure and the physical origin and efficiency of the internal mixing processes? It is now possible using the apsidal motion rate in close eccen…
astro-ph.SR2025
One century data of τ CMa: a (2+1)+1 system with a short-period overcontact binary and an eccentric intermediate orbit with probably no apsidal motion
Sophie Rosu, Jesús Maíz Apellániz, Luca Sciarini +4
τ Canis Majoris (CMa) is an intriguing system that has captured astronomers' attention for more than a century. The two main components Aa and Ab are two evolved O stars on a 350 y…