1. Observational evidence of coalescence as a viable cause of magnetism in massive stars
- Author
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Frost, A.J., Mahy, L., Sana, H., Barba, R.H., Barron, J., Bowman, D.M., Fabry, M., Bouquin, J-B Le, Morrell, N.I., Marchant, P., Merand, A., Munoz, M., Schneider, F.R.N, Shenar, T., and Wade, G.
- Subjects
o-type ,magnetism ,triple ,Astrophysics::Solar and Stellar Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics::Earth and Planetary Astrophysics ,interferometry ,Astrophysics::Galaxy Astrophysics ,merger - Abstract
Understanding the effects of the interactions of stars in higher order multiple systems is critical if we wish to understand the evolution of massive stars, most of which are expected to exist in multiple systems. In this talk we present the case of magnetic binary system HD 148937, which we believe is the result of interactions in a higher order system. Using interferometric infrared data, optical spectra and astroseismological data, we have constrained the orbit of the system and the physical and atmospheric properties of the individual stars. These results allow us to derive the current evolutionary status of the stars in the system as well as its evolutionary history, providing new insight into the origin of magnetism in massive stars. 
- Published
- 2021
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