A Buddy for Betelgeuse: Binarity as the Origin of the Long Secondary Period in α Orionis

We predict the existence of α Ori B, a low-mass companion orbiting Betelgeuse. This is motivated by the presence of a 2170 day long secondary period (LSP) in Betelgeuse’s lightcurve, a periodicity that is ≈5 times longer than the star’s 416 day fundamental radial pulsation mode. While binarity is cu...

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Principais autores:	Jared A. Goldberg, Meridith Joyce, László Molnár
格式:	Artigo
語言:	Inglês
出版:	IOP Publishing 2024-01-01
叢編:	The Astrophysical Journal
主題:	Long period variable stars Binary stars Red supergiant stars Circumstellar dust Massive stars Stellar pulsations
在線閱讀:	https://doi.org/10.3847/1538-4357/ad87f4
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