Radial Velocity and Astrometric Evidence for a Close Companion to Betelgeuse

Radial Velocity and Astrometric Evidence for a Close Companion to Betelgeuse

We examine a century of radial velocity, visual magnitude, and astrometric observations of the nearest red supergiant, Betelgeuse, in order to reexamine the century-old assertion that Betelgeuse might be a spectroscopic binary. These data reveal Betelgeuse varying stochastically over years and decad...

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Bibliographic Details
Main Authors:	Morgan MacLeod, Sarah Blunt, Robert J. De Rosa, Andrea K. Dupree, Thomas Granzer, Graham M. Harper, Caroline D. Huang, Emily M. Leiner, Abraham Loeb, Eric L. Nielsen, Klaus G. Strassmeier, Jason J. Wang, Michael Weber
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Series:	The Astrophysical Journal
Subjects:	Red supergiant stars Binary stars Tidal interaction Astrometric binary stars Radial velocity
Online Access:	https://doi.org/10.3847/1538-4357/ad93c8
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