Tidal disruption of planetary bodies by white dwarfs II: Debris disc structure and ejected interstellar asteroids

Abstract

We make use of a new hybrid method to simulate the long-term, multiple-orbit disc formation through tidal disruptions of rocky bodies by white dwarfs, at high-resolution and realistic semi-major axis. We perform the largest-yet suite of simulations for dwarf and terrestrial planets, spanning four orders of magnitude in mass, various pericentre distances and semi-major axes between 3 AU and 150 AU. This large phase space of tidal disruption conditions has not been accessible through the use of previous codes. We analyse the statistical and structural properties of the emerging debris discs, as well as the ejected unbound debris contributing to the population of interstellar asteroids. Unlike previous tidal disruption studies of small asteroids which form ring-like structures on the original orbit, we find that the tidal disruption of larger bodies usually forms dispersed structures of interlaced elliptic eccentric annuli on tighter orbits. We characterize the (typically power-law) size-distribution of the ejected interstellar bodies as well as their composition, rotation velocities and ejection velocities. We find them to be sensitive to the depth (impact parameter) of the tidal disruption. Finally, we briefly discuss possible implications of our results in explaining the peculiar variability of Tabby's star, the origin of the transit events of ZTF J0139+5245 and the formation of a planetary core around SDSS J1228+1040.

References in corpus (70)

• A Tidally-Disrupted Asteroid Around the White Dwarf G29-38
• Hydrodynamical Simulations to Determine the Feeding Rate of Black Holes by the Tidal Disruption of Stars: The Importance of the Impact Parameter and Stellar Structure
• A disintegrating minor planet transiting a white dwarf
• Are There Unstable Planetary Systems Around White Dwarfs?
• The frequency of planetary debris around young white dwarfs
• Ejection of hypervelocity stars by the (binary) black hole(s) in the Galactic center
• Ancient planetary systems are orbiting a large fraction of white dwarf stars
• Planet Hunters X. KIC 8462852 - Where's the Flux?
• The Link Between Planetary Systems, Dusty White Dwarfs, and Metal Polluted White Dwarfs
• Circumstellar Debris and Pollution at White Dwarf Stars
• Foretellings of Ragnarök: World-engulfing Asymptotic Giants and the Inheritance of White Dwarfs
• Pollution of single white dwarfs by accretion of many small asteroids
• Hot Jupiters and Cool Stars
• Consequences of Strong Compression in Tidal Disruption Events
• Dynamical effects of stellar mass loss on a Kuiper-like belt
• The Dust cloud around the White Dwarf G 29-38
• Formation of planetary debris discs around white dwarfs I: Tidal disruption of an extremely eccentric asteroid
• Chemical Abundances in the Externally Polluted White Dwarf GD 40: Evidence of a Rocky Extrasolar Minor Planet
• On the Spectral Evolution of Cool, Helium-Atmosphere White Dwarfs: Detailed Spectroscopic and Photometric Analysis of DZ Stars
• A planetesimal orbiting within the debris disc around a white dwarf star
• Debris Disks Around White Dwarfs: The DAZ Connection
• Global Models of Runaway Accretion in White Dwarf Debris Disks
• Cool DZ white dwarfs II: Compositions and evolution of old remnant planetary systems
• The Mass-Loss Induced Eccentric Kozai Mechanism: A New Channel for the Production of Close Compact Object-Stellar Binaries
• Six White Dwarfs with Circumstellar Silicates
• Runaway accretion of metals from compact debris disks onto white dwarfs
• Oxygen fugacities of extrasolar rocks: Evidence for an Earth-like geochemistry of exoplanets
• The triple evolution dynamical instability: Stellar collisions in the field and the formation of exotic binaries
• Infrared Emission from the Dusty Disk Orbiting GD 362, An Externally-Polluted White Dwarf
• Polluted White Dwarfs: Constraints on the Origin and Geology of Exoplanetary Material
• Doppler-imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9
• Detectable close-in planets around white dwarfs through late unpacking
• The Dust cloud around the White Dwarf G 29-38. 2. Spectrum from 5-40 microns and mid-infrared variability
• Signs of a faint disc population at polluted white dwarfs
• Hyper Velocity Stars and the Restricted Parabolic 3-body Problem
• Injection of Oort Cloud Comets: The Fundamental Role of Stellar Perturbations
• Planetary engulfment as a trigger for white dwarf pollution
• Interpretation and diversity of exoplanetary material orbiting white dwarfs
• The tumbling rotational state of 1I/`Oumuamua
• Throwing Icebergs at White Dwarfs
• KIC 8462852: Transit of a Large Comet Family
• Explaining the variability of WD 1145+017 with simulations of asteroid tidal disruption
• Star Hoppers: Planet Instability and Capture in Evolving Binary Systems
• Element abundances in cool white dwarfs. II. Ultraviolet observations of DZ white dwarfs
• Tidal disruption of planetary bodies by white dwarfs I: A hybrid SPH-analytical approach
• Evaporation and Accretion of Extrasolar Comets Following White Dwarf Kicks
• White dwarf pollution by planets in stellar binaries
• Secular dynamics in hierarchical three-body systems with mass loss and mass transfer
• White Dwarf Pollution by Asteroids from Secular Resonances
• Liberating exomoons in white dwarf planetary systems
• A smooth particle hydrodynamics code to model collisions between solid, self-gravitating objects
• Deposition of steeply infalling debris around white dwarf stars
• Transient outburst events from tidally disrupted asteroids near white dwarfs
• Thawing the frozen-in approximation: implications for self-gravity in deeply plunging tidal disruption events
• KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989
• KIC 8462852 Faded Throughout the Kepler Mission
• Rapid Evolution of the Gaseous Exoplanetary Debris Around the White Dwarf Star HE 1349--2305
• The Fate of Exomoons in White Dwarf Planetary Systems
• Dynamical constraints on the origin of the young B-stars in the Galactic center
• Modelling the KIC8462852 light curves: compatibility of the dips and secular dimming with an exocomet interpretation
• Polluting White Dwarfs with Perturbed Exo-Comets
• Transfer, loss and physical processing of water in hit-and-run collisions of planetary embryos
• Constraints on the circumstellar dust around KIC 8462852
• Embedding planetesimals into white dwarf discs from large distances
• Mysterious eclipses in the light-curve of KIC8462852: a possible explanation
• Planet seeding through gas-assisted capture of interstellar objects
• Chaotic rotation and evolution of asteroids and small planets in high-eccentricity orbits around white dwarfs
• The Contraction/Expansion History of Charon with implication for its Planetary Scale Tectonic Belt
• The 2019 Discovery of a Meteor of Interstellar Origin
• Moonfalls: Collisions between the Earth and its past moons

Cited by in corpus (48)

• Tidal disruption of planetary bodies by white dwarfs I: A hybrid SPH-analytical approach
• The frequency of gaseous debris discs around white dwarfs
• Planetary Systems Around White Dwarfs
• Relentless and Complex Transits from a Planetesimal Debris Disk
• White dwarfs with planetary remnants in the era of Gaia I: six emission line systems
• A road-map to white dwarf pollution: Tidal disruption, eccentric grind-down, and dust accretion
• The dust never settles: collisional production of gas and dust in evolved planetary systems
• Five New Post-Main-Sequence Debris Disks with Gaseous Emission
• Circularization of tidal debris around white dwarfs: implications for gas production and dust variability
• Post-main-sequence debris from rotation-induced YORP break-up of small bodies II: multiple fissions, internal strengths and binary production
• The lifetimes of planetary debris discs around white dwarfs
• Constraining the origin of the planetary debris surrounding ZTF J0139+5245 through rotational fission of a triaxial asteroid
• Origin of (2014) MU69-like Kuiper-belt contact binaries from wide binaries
• Accretion of tidally disrupted asteroids onto white dwarfs: direct accretion versus disk processing
• Collisions in a gas-rich white dwarf planetary debris disc
• The dynamical history of the evaporating or disrupted ice giant planet around white dwarf WD J0914+1914
• Asynchronous accretion can mimic diverse white dwarf pollutants I: core and mantle fragments
• Orbit decay of 2-100 au planetary remnants around white dwarfs with no gravitational assistance from planets
• Formation of eccentric gas discs from sublimating or partially disrupted asteroids orbiting white dwarfs
• Are there any pristine comets? Constraints from pebble structure
• Periodic repeating fast radio bursts: interaction between a magnetized neutron star and its planet in an eccentric orbit
• The entry geometry and velocity of planetary debris into the Roche sphere of a white dwarf
• Linking the formation and fate of exo-Kuiper belts within solar system analogues
• Tilting Uranus via the migration of an ancient satellite
• Asynchronous accretion can mimic diverse white dwarf pollutants II: water content
• Dynamical structure of highly eccentric discs with applications to tidal disruption events
• The white dwarf planet WD J0914+1914 b: barricading potential rocky pollutants?
• Mysterious Dust-emitting Object Orbiting TIC 400799224
• The grain size survival threshold in one-planet post-main-sequence exoplanetary systems
• Velocity-imaging the rapidly precessing planetary disc around the white dwarf HE 1349-2305 using Doppler tomography
• Generating metal-polluting debris in white dwarf planetary systems from small-impact crater ejecta
• Discovery of magnetically guided metal accretion onto a polluted white dwarf
• Collisional formation of massive exomoons of super-terrestrial exoplanets
• Asteroid belt survival through stellar evolution: dependence on the stellar mass
• Dynamics of the clumps partially disrupted from a planet around a neutron star
• Rapid destruction of planetary debris around white dwarfs through aeolian erosion
• Can scallop-shell stars trap dust in their magnetic fields?
• High-resolution resonant portraits of a single-planet white dwarf system
• Binary asteroid scattering around white dwarfs
• Interstellar Meteors from Tidal Disruption of Rocky Planets on Eccentric Orbits Around M Dwarfs
• Planetesimals drifting through dusty and gaseous white dwarf debris discs: Types I, II and III-like migration
• Partial disruption of a planet around a white dwarf: the effect of perturbation from the remnant planet on the accretion
• Origin of Ca II emission around polluted white dwarfs
• White dwarf constraints on geological processes at the population level
• Gyr-timescale destruction of high-eccentricity asteroids by spin and why 2006 HY51 has been spared
• Repeating X-ray bursts: Interaction between a neutron star and clumps partially disrupted from a planet
• Disruption of exo-asteroids around white dwarfs and the release of dust particles in debris rings in co-orbital motion
• Detecting water ice and vapor disks originating from icy planetary bodies around white dwarfs with future PRIMA observations