Binary-induced spiral arms inside the disc cavity of AB Aurigae

Abstract

In this work we demonstrate that the inner spiral structure observed in AB Aurigae can be created by a binary star orbiting inside the dust cavity. We find that a companion with a mass-ratio of 0.25, semi-major axis of 40 au, eccentricity of 0.5, and inclination of 90° produces gaseous spirals closely matching the ones observed in ${}^{12}$CO (2-1) line emission. Based on dust dynamics in circumbinary discs (Poblete, Cuello, and Cuadra 2019), we constrain the inclination of the binary with respect to the circumbinary disc to range between 60° and 90°. We predict that the stellar companion is located roughly 0.18 arcsec from the central star towards the east-southeast, above the plane of the disc. Should this companion be detected in the near future, our model indicates that it should be moving away from the primary star at a rate of 6 mas/yr on the plane of the sky. Since our companion is inclined, we also predict that the spiral structure will appear to change with time, and not simply co-rotate with the companion.

arXiv commentAccepted for publication in MNRAS. 11 Pages, 7 Figures

References in corpus (62)

• Gaia Data Release 2. Summary of the contents and survey properties
• Modelling Accretion in Protobinary Systems
• Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
• A Major Asymmetric Dust Trap in a Transition Disk
• Phantom: A smoothed particle hydrodynamics and magnetohydrodynamics code for astrophysics
• Monte Carlo radiative transfer in protoplanetary disks
• On the diversity and statistical properties of protostellar discs
• Benchmark problems for continuum radiative transfer. High optical depths, anisotropic scattering, and polarisation
• Kinematic evidence for an embedded protoplanet in a circumstellar disc
• Accretion Rates in Herbig Ae stars
• Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk
• Direct Imaging of Fine Structures in Giant Planet Forming Regions of the Protoplanetary Disk around AB Aurigae
• Large-Scale Asymmetries in the Transitional Disks of SAO 206462 and SR 21
• Structures in the protoplanetary disk of HD142527 seen in polarized scattered light
• Observational Signatures of Planets in Protoplanetary Disks II: Spiral Arms Observed in Scattered Light Imaging Can be Induced by Planets
• The Structure of Spiral Shocks Excited by Planetary-mass Companions
• On the diffusive propagation of warps in thin accretion discs
• Nonlinear propagation of planet-generated tidal waves
• Kinematic detection of a planet carving a gap in a protoplanetary disc
• Circumbinary, not transitional: On the spiral arms, cavity, shadows, fast radial flows, streamers and horseshoe in the HD142527 disc
• A Likely Close-In Low-Mass Stellar Companion to the Transitional Disk Star HD 142527
• Protoplanetary Disk Winds by Magnetorotational Instability : Formation of an Inner Hole and a Crucial Assist for Planet Formation
• On the binarity of Herbig Ae/Be stars
• The Kozai-Lidov Mechanism in Hydrodynamical Disks
• Sub-arcsec imaging of the AB Aur molecular disk and envelope at millimeter wavelengths: a non Keplerian disk
• Flybys in protoplanetary discs: I. Gas and dust dynamics
• The Dispersal of Protoplanetary Disks
• Asymmetric transition disks: Vorticity or eccentricity?
• Measuring Protoplanetary Disk Accretion with H I Pf-beta
• On the origin of horseshoes in transitional discs
• The circumstellar disk of AB Aurigae: evidence for envelope accretion at late stages of star formation?
• Planet Formation in AB Aurigae: Imaging of the inner gaseous Spirals observed inside the Dust Cavity
• Misaligned gas discs around eccentric black-hole binaries and implications for the final-parsec problem
• Polar alignment of a protoplanetary disk around an eccentric binary
• Spiral Arms in Gravitationally Unstable Protoplanetary Disks as Imaged in Scattered Light
• An M-dwarf star in the transition disk of Herbig HD 142527; Physical parameters and orbital elements
• Inclination Evolution of Protoplanetary Disks Around Eccentric Binaries
• Gas flow and accretion via spiral streamers and circumstellar disks in a young binary protostar
• Precession and accretion in circumbinary discs: The case of HD 104237
• Cloudlet capture by Transitional Disk and FU Orionis stars
• There is no magnetic braking catastrophe: Low-mass star cluster and protostellar disc formation with non-ideal magnetohydrodynamics
• Possible evidence of ongoing planet formation in AB Aurigae. A showcase of the SPHERE/ALMA synergy
• Circumbinary discs: Numerical and physical behaviour
• Observability of planet-disc interactions in CO kinematics
• The origin and evolution of transition discs: successes, problems and open questions
• How Spirals and Gaps Driven by Companions in Protoplanetary Disks Appear in Scattered Light at Arbitrary Viewing Angles
• Planet-driven spiral arms in protoplanetary disks: II. Implications
• A search for close bright companions to AeBe stars
• AB Aurigae Resolved: Evidence for Spiral Structure
• Signatures of an eccentric disc cavity: Dust and gas in IRS 48
• Planet formation and stability in polar circumbinary discs
• High spatial resolution imaging of SO and H2CO in AB Auriga: the first SO image in a transitional disk
• Alignment of a circumbinary disc around an eccentric binary with application to KH 15D
• An Ionized Outflow from AB Aur, a Herbig Ae Star with a Transitional Disk
• Lidov-Kozai Mechanism in Hydrodynamical Disks: Linear Stability Analysis
• Bright Localized Near-Infrared Emission at 1-4 AU in the AB Aurigae Disk Revealed by IOTA Closure Phases
• Probing the cold dust emission in the AB Aur disk: a dust trap in a decaying vortex?
• Dusty clumps in circumbinary discs
• Gas accretion within the dust cavity in AB Aur
• High-Resolution Near-Infrared Polarimetry and Sub-Millimeter Imaging of FS Tau A: Possible Streamers in Misaligned Circumbinary Disk System
• Late encounter-events as a source of disks and spiral structures -- Forming second generation disks
• Radio Continuum Sources Associated with AB Aur

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• The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution
• On the diversity of asymmetries in gapped protoplanetary disks
• Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Late infall causing disk misalignment and dynamic structures in SU Aur
• Misaligned disks induced by infall
• The mass and size of Herbig disks as seen by ALMA
• Transition disks: the observational revolution from SEDs to imaging
• Are the spiral arms in the MWC 758 protoplanetary disc driven by a companion inside the cavity?
• Circumbinary and circumstellar discs around the eccentric binary IRAS 04158+2805 -- a testbed for binary-disc interaction
• HD 143006: circumbinary planet or misaligned disc?
• Spirals, shadows & precession in HD 100453 -- I. The orbit of the binary
• The Architecture of the V892 Tau System: the Binary and its Circumbinary Disk
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• Spirals, shadows & precession in HD 100453 -- II. The hidden companion
• Constraining the Circumbinary Disk Tilt in the KH 15D system
• Dust Traffic Jams in Inclined Circumbinary Protoplanetary Discs I. Morphology and Formation Theory
• Exciting spiral arms in protoplanetary discs from flybys
• The protoplanetary disc around HD 169142: circumstellar or circumbinary?
• Observational Signatures of Circumbinary Discs I: Kinematics
• Spatially resolving polycyclic aromatic hydrocarbons in Herbig Ae disks with VISIR-NEAR at the VLT
• V892 Tau: A tidally perturbed circumbinary disc in a triple stellar system
• LBT search for companions and sub-structures in the (pre)transitional disk of AB Aurigae
• Probing dust and grain growth in the optically thick circumbinary ring of V892 Tau
• On the cavity size in circumbinary discs