On the frequencies of circumbinary discs in protostellar systems

Elsender, Daniel; Bate, Matthew R.; Lakeland, Ben S.; Jensen, Eric L. N.; Lubow, Stephen H.

doi:10.1093/mnras/stad1695

Cited by 5 publications

(2 citation statements)

References 135 publications

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“…These cover a wide range of physical and orbital parameters, including co-planar or inclined (even polar), warped, torn, and very young disks (e.g., [59][60][61][62][63][64][65][66][67][68][69], and references therein). Combined with a high expected frequency of circumbinary disks around compact young systems (almost 90% for binaries with semi-major axes smaller than 1 au [39]), these discoveries demonstrate that the necessary ingredients for planet formation around binary stars are readily available.…”

Section: Introductionmentioning

confidence: 92%

“…The existence of protoplanetary circumbinary disks was firmly established at the turn of the century (e.g., [39,58], and references therein), with dozens of circumbinary disks resolved or inferred at the time of writing. These cover a wide range of physical and orbital parameters, including co-planar or inclined (even polar), warped, torn, and very young disks (e.g., [59][60][61][62][63][64][65][66][67][68][69], and references therein).…”

Section: Introductionmentioning

confidence: 99%

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Transiting Circumbinary Planets in the Era of Space-Based Photometric Surveys

Kostov

2023

Universe

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Planets orbiting binary stars—circumbinary planets—play a paramount role in our understanding of planetary and stellar formation and evolution, dynamical interactions in many-body systems, and the potential for habitable environments beyond the Solar System. Each new discovery holds immense value and inherent fascination both for the astronomical community and for the general public. This is perhaps best demonstrated by the 1500+ citations of the discovery papers for the 14 known transiting circumbinary planets and the dozens of related press-releases in major news outlets. This article reviews the observational and theoretical aspects related to the detection and confirmation of transiting circumbinary planets around main-sequence binaries from space-based surveys, discusses the associated challenges, and highlights some of the recent results.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Transiting Circumbinary Planets in the Era of Space-Based Photometric Surveys

Kostov

2023

Universe

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Probing initial distributions of orbital eccentricity and disc misalignment via polar discs

Ceppi,

Cuello,

Lodato

et al. 2024

A&A

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In a population of multiple protostellar systems with discs, the sub-population of circumbinary discs whose orbital plane is highly misaligned with respect to the binary's orbital plane constrains the initial distribution of orbital parameters of the whole population. We show that by measuring the polar disc fraction and the average orbital eccentricity in the polar discs, one can constrain the distributions of initial eccentricity and mutual inclination in multiple stellar systems at birth.

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V892 Tau: A tidally perturbed circumbinary disc in a triple stellar system

Alaguero,

Cuello,

Ménard

et al. 2024

A&A

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V892 Tau is a young binary star surrounded by a circumbinary disc that shows hints of an interaction with the low-mass nearby star V892 Tau NE. The goal of this paper is to constrain the orbit of V892 Tau NE and to determine the resulting circumbinary disc dynamics. We present new ALMA observations of the V892 Tau circumbinary disc at a twice higher angular and spectral resolution. We modelled the data with V892 Tau as a triple system and performed a grid of hydrodynamical simulations testing several orbits of the companion. The simulation outputs were then post-processed to build synthetic maps that we compared to the observations. The 12CO emission of the disc shows clear non-Keplerian features such as spiral arms. When comparing the data with our synthetic observations, we interpreted these features as ongoing interactions with the companion. Our simulations indicate that an eccentricity of $e of the companion is needed to reproduce the observed disc extent and that a mutual inclination of $ i with the inner binary reproduces the measured disc tilt. In order to explain most of the features of the circumbinary disc, we propose that V892 Tau NE follows an orbit with a mild eccentricity $0.2 < e < 0.5$ and a mutual inclination of $30 i < 60 Such a misaligned companion suggests the disc is oscillating and precessing with time, stabilising in an intermediate plane with a non-zero mutual inclination with the inner binary. Given the orbital configuration, we show that the stability of future planets is compromised in the second half of the disc once the gas has dissipated.

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On the frequencies of circumbinary discs in protostellar systems

Cited by 5 publications

References 135 publications

Transiting Circumbinary Planets in the Era of Space-Based Photometric Surveys

Transiting Circumbinary Planets in the Era of Space-Based Photometric Surveys

Probing initial distributions of orbital eccentricity and disc misalignment via polar discs

V892 Tau: A tidally perturbed circumbinary disc in a triple stellar system

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