AC Her: Evidence of the First Polar Circumbinary Planet [PDF]
The Astrophysical Journal Letters, 2023 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 ...
Rebecca G. Martin +4 more
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Coplanar Circumbinary Planets Can Be Unstable to Large Tilt Oscillations in the Presence of an Inner Polar Planet [PDF]
The Astrophysical Journal Letters, 2023 Mutually misaligned circumbinary planets may form in a warped or broken gas disk or from later planet–planet interactions. With numerical simulations and analytic estimates we explore the dynamics of two circumbinary planets with a large mutual ...
Anna C. Childs +4 more
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Improving circumbinary planet detections by fitting their binary’s apsidal precession [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Apsidal precession in stellar binaries is the main non-Keplerian dynamical effect impacting the radial-velocities of a binary star system. Its presence can notably hide the presence of orbiting circumbinary planets because many fitting algorithms ...
Thomas A Baycroft +4 more
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Dynamical Stability of Polar Circumbinary Orbits and Planet Formation in the Planetary Disk of 99 Herculis [PDF]
The Astronomical Journal, 2023 A possible polar-ring debris disk, the dynamics of which can be described by the outer hierarchical restricted three-body problem, has been detected in 99 Herculis.
Ying Wang +4 more
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TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data [PDF]
Astronomical Journal, 2021 We report the first discovery of a transiting circumbinary planet detected from a single sector of Transiting Exoplanet Survey Satellite (TESS) data.
Veselin B. Kostov +85 more
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Photo-dynamical Analysis of Circumbinary Multi-planet System TOI-1338: A Fully Coplanar Configuration with a Puffy Planet [PDF]
The Astronomical JournalTOI-1338 is the first circumbinary planet (CBP) system discovered by TESS. It has one transiting planet at P ∼ 95 days and an outer nontransiting planet at P ∼ 215 days complemented by radial velocity (RV) observation.
Mu-Tian Wang, Hui-Gen Liu
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Circumbinary Habitable Zones in the Presence of a Giant Planet [PDF]
Frontiers in Astronomy and Space Sciences, 2021 Determining habitable zones in binary star systems can be a challenging task due to the combination of perturbed planetary orbits and varying stellar irradiation conditions.
Nikolaos Georgakarakos +8 more
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Orbital evolution of a circumbinary planet in a gaseous disk [PDF]
Earth, Planets and Space, 2019 Sub-Jupiter classed circumbinary planets discovered in close-in binary systems have orbits just beyond the dynamically unstable region, which is determined by the eccentricity and mass ratio of the host binary stars.
Akihiro Yamanaka, Takanori Sasaki
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Concealing Circumbinary Planets with Tidal Shrinkage [PDF]
The Astrophysical JournalOf the 14 transiting planets that have been detected orbiting eclipsing binaries (“circumbinary planets”), none have been detected with stellar binary orbital periods shorter than 7 days, despite such binaries existing in abundance.
Saahit Mogan, J.J. Zanazzi
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Fundamental effective temperature measurements for eclipsing binary stars – V. The circumbinary planet system EBLM J0608–59 [PDF]
Monthly notices of the Royal Astronomical SocietyEBLM J0608−59 / TOI-1338 / BEBOP-1 is a 12th-magnitude, F9 V star in an eclipsing binary with a much fainter M dwarf companion on a wide, eccentric orbit (P=14.6 d).
P. F. L. Maxted +5 more
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