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Misaligned circumbinary discs around unequal-mass eccentric binaries: alignment, morphology, and binary accretion variability
Ruiqi Yang, Jeremy L. Smallwood, Hongping Deng +4
Binary systems are ubiquitous in the Universe and often host circumbinary discs that are misaligned with the binary orbital plane. Such misalignments can affect disc evolution and…
Circumbinary accretion as a diagnostic for binary--disc misalignment
Jeremy L. Smallwood, Ya-Ping Li, Hongping Deng +1
Binary star systems can accrete material originating from a circumbinary disc. Since it is common for the circumbinary disc to be tilted with respect to the binary orbital plane, w…
Formation of the polar debris disc around 99 Herculis
Jeremy L. Smallwood, Alessia Franchini, Cheng Chen +4
We investigate the formation mechanism for the observed nearly polar aligned (perpendicular to the binary orbital plane) debris ring around the eccentric orbit binary 99 Herculis.…
Multi-planet disc interactions in binary systems
Alessia Franchini, Rebecca G. Martin, Stephen H. Lubow
We investigate the evolution of a multi--planet--disc system orbiting one component of a binary star system. The planet--disc system is initially coplanar but misaligned to the bin…
Orbital dynamics of circumbinary planets
Cheng Chen, Alessia Franchini, Stephen H. Lubow +1
We investigate the dynamics of a nonzero mass, circular orbit planet around an eccentric orbit binary for various values of the binary eccentricity, binary mass fraction, planet ma…
Circumbinary disk inner radius as a diagnostic for disk--binary misalignment
Alessia Franchini, Stephen H. Lubow, Rebecca G. Martin
We investigate the misalignment of the circumbinary disk around the binary HD 98800 BaBb with eccentricity . \cite{Kennedy2019} observed the disk to be either at an in…
Alignment of a circumbinary disc around an eccentric binary with application to KH 15D
Jeremy L. Smallwood, Stephen H. Lubow, Alessia Franchini +1
We analyse the evolution of a mildly inclined circumbinary disc that orbits an eccentric orbit binary by means of smoother particle hydrodynamic (SPH) simulations and linear theory…
Misaligned accretion disc formation via Kozai-Lidov oscillations
Alessia Franchini, Rebecca G. Martin, Stephen H. Lubow
We investigate the formation and evolution of misaligned accretion discs around the secondary component of a binary through mass transfer driven by Kozai-Lidov oscillations of the…