On the cavity size in circumbinary discs
arXiv:2008.08008 · doi:10.1093/mnras/staa2536
Abstract
How does the cavity size in circumbinary discs depend on disc and binary properties? We investigate by simulating disc cavities carved by binary companions using smoothed particle hydrodynamics (SPH). We find that a cavity is quickly opened on the dynamical time, while the cavity size is set on the viscous time. In agreement with previous findings, we find long term cavity sizes of 2-5 times the binary semi-major axis, increasing with eccentricity and decreasing with disc aspect ratio. When considering binaries inclined with respect to the disc we find three regimes: i) discs that evolve towards a coplanar orbit have a large cavity, slightly smaller than that of an initially coplanar disc; ii) discs that evolve towards a polar orbit by breaking have a small cavity, equal in size to that of an initially polar disc; iii) discs that evolve towards a polar orbit via warping have an intermediate-sized cavity. We find typical gas depletions inside the cavity of orders of magnitude in surface density.
12 pages, 13 figures, accepted to MNRAS
References in corpus (59)
- Modelling Accretion in Protobinary Systems
- SPLASH: An interactive visualisation tool for Smoothed Particle Hydrodynamics simulations
- Resolved Images of Large Cavities in Protoplanetary Transition Disks
- A Major Asymmetric Dust Trap in a Transition Disk
- Phantom: A smoothed particle hydrodynamics and magnetohydrodynamics code for astrophysics
- Observations of gas flows inside a protoplanetary gap
- Shadows cast by a warp in the HD 142527 protoplanetary disk
- Dust dynamics during protoplanetary disc clearing
- Resolved gas cavities in transitional disks inferred from CO isotopologues with ALMA
- Observational Signatures of Planets in Protoplanetary Disks II: Spiral Arms Observed in Scattered Light Imaging Can be Induced by Planets
- The Disk Around CoKu Tau/4: Circumbinary, not Transitional
- Shadows and spirals in the protoplanetary disk HD 100453
- A Millimeter Continuum Size-Luminosity Relationship for Protoplanetary Disks
- Tearing up the disc: misaligned accretion on to a binary
- On the diffusive propagation of warps in thin accretion discs
- 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
- Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
- Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA
- On the wake generated by a planet in a disc
- Tidal Truncation of Inclined Circumstellar and Circumbinary Discs in Young Stellar Binaries
- Wave-like warp propagation in circumbinary discs I. Analytic theory and numerical simulations
- On the convergence of the critical cooling timescale for the fragmentation of self-gravitating discs
- Circumbinary disk evolution
- Asymmetric transition disks: Vorticity or eccentricity?
- New insights into the nature of transition disks from a complete disk survey of the Lupus star forming region
- A dusty torus around the luminous young star LkHa 101
- On the origin of horseshoes in transitional discs
- The Degree of Alignment Between Circumbinary Disks and Their Binary Hosts
- Misaligned gas discs around eccentric black-hole binaries and implications for the final-parsec problem
- A compact concentration of large grains in the HD142527 protoplanetary dust trap
- Probing the turbulent mixing strength in protoplanetary disks across the stellar mass range: no significant variations
- Homogeneous Analysis of the Dust Morphology of Transition Disks Observed with ALMA: Investigating dust trapping and the origin of the cavities
- Polar alignment of a protoplanetary disk around an eccentric binary
- Exploring dust around HD142527 down to 0.025" / 4au using SPHERE/ZIMPOL
- An inner warp in the DoAr 44 T Tauri transition disk
- CO gas inside the protoplanetary disk cavity in HD 142527: disk structure from ALMA
- Circumbinary discs: Numerical and physical behaviour
- A dust and gas cavity in the disc around CQ Tau revealed by ALMA
- Connecting the shadows: probing inner disk geometries using shadows in transitional disks
- Imaging the disk around the luminous young star LkHalpha 101 with infrared interferometry
- Signatures of an eccentric disc cavity: Dust and gas in IRS 48
- Polar alignment of a protoplanetary disc around an eccentric binary II: Effect of binary and disc parameters
- On the planetary interpretation of multiple gaps and rings in protoplanetary disks seen by ALMA
- Polar alignment of a protoplanetary disc around an eccentric binary III: Effect of disc mass
- Resonances in retrograde circumbinary discs
- Determining the mid-plane conditions of circumstellar discs using gas and dust modelling: a study of HD 163296
- Hydrodynamical turbulence in eccentric circumbinary discs and its impact on the in situ formation of circumbinary planets
- The Role of Disc Self-Gravity in Circumbinary Planet Systems: I. Disc Structure and Evolution
- On The Secular Evolution of GG Tau A Circumbinary Disc: A Msialigned Disc Scenario
- Wall emission in circumbinary disks: the case of CoKu Tau/4
- Mapping CO Gas in the GG Tauri A Triple System with 50 AU Spatial Resolution
- Flyby-induced misalignments in planet-hosting discs
- Binary-induced spiral arms inside the disc cavity of AB Aurigae
- Testing dust trapping in the circumbinary disk around GG Tau A
- Near-Infrared Imaging Polarimetry of Inner Region of GG Tau A Disk
- DZ Cha: a bona fide photoevaporating disc
- New binaries in the epsilon Cha association
- Infrared Variability from Circumbinary Disc Temperature Modulations