AC Her: Evidence of the First Polar Circumbinary Planet

AC Her: Evidence of the First Polar Circumbinary Planet

We examine the geometry of the post–asymptotic giant branch (AGB) star binary AC Her and its circumbinary disk. We show that the observations describe a binary orbit that is perpendicular to the disk with an angular momentum vector that is within 9° of the binary eccentricity vector, meaning that th...

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Bibliographic Details
Main Authors: Rebecca G. Martin, Stephen H. Lubow, David Vallet, Narsireddy Anugu, Douglas R. Gies
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal Letters
Subjects:
Accretion
Binary stars
Hydrodynamics
Exoplanet formation
Post-asymptotic giant branch stars
Online Access:https://doi.org/10.3847/2041-8213/ad0730

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