Giant Impacts and Debris Disk Morphology

Abstract

Certain debris disks have non-axisymmetric shapes in scattered light which are unexplained. The appearance of a disk depends on how its constituent Keplerian ellipses are arranged. The more the ellipses align apsidally, the more non-axisymmetric the disk. Apsidal alignment is automatic for fragments released from a catastrophic collision between solid bodies. We synthesize scattered light images, and thermal emission images, of such giant impact debris. Depending on the viewing geometry, and if and how the initial apsidal alignment is perturbed, the remains of a giant impact can appear in scattered light as a one-sided or two-sided "fork", a lopsided "needle", or a set of "double wings". Double wings are difficult to reproduce in other scenarios involving gravitational forcing or gas drag, which do not align orbits as well. We compare our images with observations and offer a scorecard assessing whether the scattered light asymmetries in HD 15115, HD 32297, HD 61005, HD 111520, HD 106906, beta Pic, and AU Mic are best explained by giant impacts, gravitational perturbations, or sculpting by the interstellar medium.

arXiv commentFinal ApJ-proofed version with updated references to summary Table 1. Animations available at https://github.com/joshwajones/jones_etal_animations/

References in corpus (59)

• A giant planet imaged in the disk of the young star Beta Pictoris
• How Observations of Circumstellar Disk Asymmetries Can Reveal Hidden Planets: Pericenter Glow and its Application to the HR 4796 Disk
• A planet on an inclined orbit as an explanation of the warp in the Beta Pictoris disk
• Debris Disks: Structure, Composition, and Variability
• Molecular Gas Clumps from the Destruction of Icy Bodies in the $\beta$ Pictoris Debris Disk
• Probing for Exoplanets Hiding in Dusty Debris Disks: Disk Imaging, Characterization, and Exploration with HST/STIS Multi-Roll Coronagraphy
• Dust Dynamics, Surface Brightness Profiles, and Thermal Spectra of Debris Disks: The Case of AU Mic
• STIS Coronagraphic Observations of Beta Pictoris
• Long-Term Collisional Evolution of Debris Disks
• Prospects for Detection of Catastrophic Collisions in Debris Disks
• Debris from giant impacts between planetary embryos at large orbital radii
• $\beta$ Pictoris' inner disk in polarized light and new orbital parameters for $\beta$ Pictoris b
• An icy Kuiper-Belt around the young solar-type star HD 181327
• beta Pic b position relative to the Debris Disk
• Azimuthal asymmetries in the debris disk around HD61005
• Large Impacts around a Solar Analog Star in the Era of Terrestrial Planet Formation
• First scattered light images of debris disks around HD 53143 and HD 139664
• Interstellar Medium Sculpting of the HD 32297 Disk
• A New Algorithm for Self-Consistent 3-D Modeling of Collisions in Dusty Debris Disks
• Close stellar encounters with planetesimal discs: The dynamics of asymmetry in the Beta Pictoris system
• A Primer on Unifying Debris Disk Morphologies
• Chaotic zone boundary for low free eccentricity particles near an eccentric planet
• Structuring the HD 141569 A circumstellar dust disk. Impact of eccentric bound stellar companions
• A Model-Independent Mass and Moderate Eccentricity for $\beta$ Pic b
• Dissecting the Moth: Discovery of an off-centered ring in the HD 61005 debris disk with high-resolution imaging
• Observations of fast-moving features in the debris disk of AU Mic on a three-year timescale: Confirmation and new discoveries
• Hubble Space Telescope Optical Imaging of the Eroding Debris Disk HD 61005
• Coagulation Calculations of Icy Planet Formation at 15--150 AU: A Correlation Between the Maximum Radius and the Slope of the Size Distribution for Transneptunian Objects
• The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks
• Collisional modelling of the AU Microscopii debris disc
• Saturn's G and D rings provide nearly complete measured scattering/phase functions of nearby debris disks
• The AU Mic Debris Disk: far-infrared and submillimeter resolved imaging
• ALMA Detection of Extended Millimeter Halos in the HD 32297 and HD 61005 Debris Disks
• ALMA resolves CI emission from the $\beta$ Pictoris debris disk
• Formation of Gaps in Self-Gravitating Debris Disks by Secular Resonance in a Single-planet System I: A Simplified Model
• On the origin of the wide-orbit circumbinary giant planet HD 106906: A dynamical scenario and its impact on the disk
• Multiple Rings of Millimeter Dust Emission in the HD 15115 Debris Disk
• Realistic On-the-fly Outcomes of Planetary Collisions II: Bringing Machine Learning to N-body Simulations
• Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS
• Bringing "The Moth" to Light: A Planet-Sculpting Scenario for the HD 61005 Debris Disk
• Multiband GPI Imaging of the HR 4796A Debris Disk
• Is the HD 15115 inner disk really asymmetrical ?
• Stellar Winds and Dust Avalanches in the AU Mic Debris Disk
• First detection of orbital motion for HD 106906 b: A wide-separation exoplanet on a Planet Nine-like orbit
• Investigating the presence of two belts in the HD 15115 system
• The dynamical evolution of dwarf planet (136108) Haumea's collisional family: General properties and implications for the trans-Neptunian belt
• Herschel-PACS observations of far-IR lines in YSOs I: [OI] and H2O at 63 microns
• The Gemini Planet Imager view of the HD 32297 debris disk
• Density waves in debris discs and galactic nuclei
• The Mineralogy and Structure of the Inner Debris Disk of β Pictoris
• Extreme Variability of the V488 Persei Debris Disk
• The far reaches of the beta Pictoris debris disk
• The case of HD 106906 debris disc: A binary's revenge
• A Deep Polarimetric Study of the Asymmetrical Debris Disk HD 106906
• Planetary Embryo Collisions and the Wiggly Nature of Extreme Debris Disks
• Sculpting eccentric debris disks with eccentric gas rings
• Formation History of HD106906 and the Vertical Warping of Debris Disks by an External Inclined Companion
• Millimeter Dust Emission and Planetary Dynamics in the HD 106906 System
• Takeout and Delivery: Erasing the Dusty Signature of Late-stage Terrestrial Planet Formation

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• Primordial or Secondary? Testing models of debris disk gas with ALMA
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS): VI. Asymmetries and offsets
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) V: Comparison between scattered light and thermal emission
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