LIDT-DD: A new self-consistent debris disc model including radiation pressure and coupling collisional and dynamical evolution

Abstract

In most current debris disc models, the dynamical and the collisional evolutions are studied separately, with N-body and statistical codes, respectively, because of stringent computational constraints. We present here LIDT-DD, the first code able to mix both approaches in a fully self-consistent way. Our aim is for it to be generic enough so as to be applied to any astrophysical cases where we expect dynamics and collisions to be deeply interlocked with one another: planets in discs, violent massive breakups, destabilized planetesimal belts, exozodiacal discs, etc. The code takes its basic architecture from the LIDT3D algorithm developed by Charnoz et al.(2012) for protoplanetary discs, but has been strongly modified and updated in order to handle the very constraining specificities of debris discs physics: high-velocity fragmenting collisions, radiation-pressure affected orbits, absence of gas, etc. In LIDT-DD, grains of a given size at a given location in a disc are grouped into "super-particles", whose orbits are evolved with an N-body code and whose mutual collisions are individually tracked and treated using a particle-in-a-box prescription. To cope with the wide range of possible dynamics, tracers are sorted and regrouped into dynamical families depending on their orbits. The code retrieves the classical features known for debris discs, such as the particle size distributions in unperturbed discs, the outer radial density profiles (slope in -1.5) outside narrow collisionally active rings, and the depletion of small grains in "dynamically cold" discs. The potential of the new code is illustrated with the test case of the violent breakup of a massive planetesimal within a debris disc. The main potential future applications of the code are planet/disc interactions, and more generally any configurations where dynamics and collisions are expected to be intricately connected.

Accepted for publication in A&A. 20 pages, 17 figures. Abstract shortened for astro-ph

References in corpus (13)

• Transience of hot dust around sun-like stars
• HST/ACS Multiband Coronagraphic Imaging of the Debris Disk around Beta Pictoris
• Long-Term Collisional Evolution of Debris Disks
• Collisional processes and size distribution in spatially extended debris discs
• Resolved Debris Discs Around A Stars in the Herschel DEBRIS Survey
• Abundant Circumstellar Silica Dust and SiO Gas Created by a Giant Hypervelocity Collision in the ~12 Myr HD172555 System
• Herschel images of Fomalhaut. An extrasolar Kuiper Belt at the height of its dynamical activity
• The History of the Solar System's Debris Disc: Observable Properties of the Kuiper Belt
• Outer edges of debris discs: how sharp is sharp?
• Collisional dust avalanches in debris discs
• Investigating the flyby scenario for the HD 141569 system
• Formation of Narrow Dust Rings in Circumstellar Debris Disks
• Collisional Particle Disks

Cited by in corpus (48)

• Exocometary gas in the HD 181327 debris ring
• Predictions for the secondary CO, C and O gas content of debris discs from the destruction of volatile-rich planetesimals
• A self-consistent model for the evolution of the gas produced in the debris disc of $\beta$ Pictoris
• A gap in the planetesimal disc around HD 107146 and asymmetric warm dust emission revealed by ALMA
• Revealing Asymmetries in the HD 181327 Debris Disk: A Recent Massive Collision or ISM Warping
• Planetesimal driven migration as an explanation for observations of high levels of warm, exozodiacal dust
• The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks
• Population synthesis of exocometary gas around A stars
• The unseen planets of double belt debris disk systems
• Resolving faint structures in the debris disk around TWA7
• A SMACK Model of Colliding Planetesimals in the $\beta$ Pictoris Debris Disk
• From scattered-light to millimeter emission: A comprehensive view of the Gyr-old system of HD 202628 and its eccentric debris ring
• A $75\%$ Occurrence Rate of Debris Discs around F stars in the $\beta$ Pic Moving Group
• Survey of planetesimal belts with ALMA: gas detected around the Sun-like star HD 129590
• The magnetorotational instability in debris-disc gas
• Can eccentric debris disks be long-lived? A first numerical investigation and application to ${\zeta }^2$ Reticuli
• Variations on Debris Disks III. Collisional Cascades and Giant Impacts in the Terrestrial Zones of Solar-type Stars
• Spatially resolved spectroscopy of the debris disk HD 32297: Further evidence of small dust grains
• New disk discovered with VLT/SPHERE around the M star GSC 07396-00759
• Formation of secondary atmospheres on terrestrial planets by late disk accretion
• Is there more than meets the eye? Presence and role of submicron grains in debris discs
• Grain Size segregation in debris discs
• Did Jupiter's core form in the innermost parts of the Sun's protoplanetary disk?
• Collisions and drag in debris discs with eccentric parent belts
• Dust production in the debris disk around HR 4796 A
• Using warm dust to constrain unseen planets
• Oort cloud asteroids: Collisional evolution, the Nice Model, and the Grand Tack
• Transient events in bright debris discs: Collisional avalanches revisited
• How dusty is alpha Centauri? Excess or non-excess over the infrared photospheres of main-sequence stars
• Impact of planetesimal eccentricities and material strength on the appearance of eccentric debris disks
• Inner edges of planetesimal belts: collisionally eroded or truncated?
• Revealing asymmetrical dust distribution in the inner regions of HD 141569
• Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light
• A re-investigation of debris disc halos
• Importance of Giant Impact Ejecta for Orbits of Planets Formed during the Giant Impact Era
• A particle-based hybrid code for planet formation
• The grain size survival threshold in one-planet post-main-sequence exoplanetary systems
• Effects of disc asymmetries on astrometric measurements - Can they mimic planets?
• A multi-wavelength study of the debris disc around 49 Cet
• Alpha-Meteoroids then and now: Unearthing an overlooked micrometeoroid population
• Circumstellar discs: What will be next?
• Searching for Biosignatures in Exoplanetary Impact Ejecta
• Twisted debris: how differential secular perturbations shape debris disks
• Collisional Cascade Caclulations for Irregular Satellite Swarms in Fomalhaut b
• Hiding in the Shadows II: Collisional Dust as Exoplanet Markers
• Debris discs in binaries: morphology and photometric signatures
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) VIII: A dust arc and non-Keplerian gas kinematics in HD 121617
• Collisional parameters of planetesimal belts, precursor of debris disks, perturbed by a nearby giant planet