Dust production in the debris disk around HR 4796 A
arXiv:1908.10378 · doi:10.1051/0004-6361/201935998
Abstract
Debris disks are the natural by-products of the planet formation process. Scattered or polarized light observations are mostly sensitive to small dust grains that are released from the grinding down of bigger planetesimals. High angular resolution observations at optical wavelengths can provide key constraints on the radial and azimuthal distribution of the small dust grains. These constraints can help us better understand where most of the dust grains are released upon collisions. We present SPHERE/ZIMPOL observations of the debris disk around HR 4796 A, and model the radial profiles along several azimuthal angles of the disk with a code that accounts for the effect of stellar radiation pressure. This enables us to derive an appropriate description for the radial and azimuthal distribution of the small dust grains. Even though we only model the radial profiles along (or close to) the semi-major axis of the disk, our best-fit model is not only in good agreement with our observations but also with previously published datasets (from near-IR to sub-mm wavelengths). We find that the reference radius is located at au, and the disk has an eccentricity of , with the pericenter located on the front side of the disk (north of the star). We find that small dust grains must be preferentially released near the pericenter to explain the observed brightness asymmetry. Even though parent bodies spend more time near the apocenter, the brightness asymmetry implies that collisions happen more frequently near the pericenter of the disk. Our model can successfully reproduce the shape of the outer edge of the disk, without having to invoke an outer planet shepherding the debris disk. With a simple treatment of the effect of the radiation pressure, we conclude that the parent planetesimals are located in a narrow ring of about au in width.
arXiv comment14 pages, 10 figures, accepted by A&A
References in corpus (65)
- Astropy: A Community Python Package for Astronomy
- emcee: The MCMC Hammer
- Gaia Data Release 2. Summary of the contents and survey properties
- VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
- SPHERE: the exoplanet imager for the Very Large Telescope
- Spitzer Space Telescope study of disks in the young Orionis cluster
- Scattering by Interstellar Dust Grains. II. X-Rays
- How Observations of Circumstellar Disk Asymmetries Can Reveal Hidden Planets: Pericenter Glow and its Application to the HR 4796 Disk
- Asymmetric features in the protoplanetary disk MWC758
- Steady-state evolution of debris disks around A stars
- Structures in the protoplanetary disk of HD142527 seen in polarized scattered light
- Molecular Gas Clumps from the Destruction of Icy Bodies in the Pictoris Debris Disk
- Nearby debris disk systems with high fractional luminosity reconsidered
- DUst Around NEarby Stars. The survey observational results
- Dust Dynamics, Surface Brightness Profiles, and Thermal Spectra of Debris Disks: The Case of AU Mic
- The Insignificance of P-R Drag in Detectable Extrasolar Planetesimal Belts
- Polarimetry with the Gemini Planet Imager: Methods, Performance at First Light, and the Circumstellar Ring around HR 4796A
- Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE
- Flybys in protoplanetary discs: I. Gas and dust dynamics
- Prospects for Detection of Catastrophic Collisions in Debris Disks
- A dust disk surrounding the young A star HR4796A
- SPHERE / ZIMPOL high resolution polarimetric imager. I. System overview, PSF parameters, coronagraphy, and polarimetry
- Dust in Resonant Extrasolar Kuiper Belts - Grain Size and Wavelength Dependence of Disk Structure
- Debris from giant impacts between planetary embryos at large orbital radii
- Near-infrared scattered light properties of the HR4796A dust ring: a measured scattering phase function from 13.6deg to 166.6deg
- STIS Imaging of the HR 4796A Circumstellar Debris Ring
- An icy Kuiper-Belt around the young solar-type star HD 181327
- Outer edges of debris discs: how sharp is sharp?
- Deep 10 and 18 micron Imaging of the HR 4796A Circumstellar Disk: Transient Dust Particles & Tentative Evidence for a Brightness Asymmetry
- Azimuthal asymmetries in the debris disk around HD61005
- Dust unveils the formation of a mini-Neptune planet in a protoplanetary ring
- Why circumstellar disks are so faint in scattered light: The case of HD 100546
- Dynamical evolution of an eccentric planet and a less massive debris disc
- A Primer on Unifying Debris Disk Morphologies
- Non-azimuthal linear polarization in protoplanetary disks
- Images of the Extended Outer Regions of the Debris Ring Around HR 4796 A
- Vertical structure of debris discs
- Predictions for Shepherding Planets in Scattered Light Images of Debris Disks
- Data Reduction Techniques for High Contrast Imaging Polarimetry. Applications to ExPo
- ALMA observations of the narrow HR 4796A debris ring
- LIDT-DD: A new self-consistent debris disc model including radiation pressure and coupling collisional and dynamical evolution
- Planet Signatures in Collisionally Active Debris Discs: scattered light images
- Optical polarized phase function of the HR\,4796A dust ring
- Apocenter glow in eccentric debris disks: implications for Fomalhaut and epsilon Eridani
- The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks
- On the Morphology and Chemical Composition of the HR 4796A Debris Disk
- An insight in the surroundings of HR4796
- Radial Distribution of Dust Grains Around HR 4796A
- Double-ringed debris discs could be the work of eccentric planets: explaining the strange morphology of HD 107146
- The HIP 79977 debris disk in polarized light
- Warm exo-Zodi from cool exo-Kuiper belts: the significance of P-R drag and the inference of intervening planets
- Signatures of massive collisions in debris discs
- Bringing "The Moth" to Light: A Planet-Sculpting Scenario for the HD 61005 Debris Disk
- Exploring the properties of warm and cold atomic hydrogen in the Taurus and Gemini regions
- The HR 4796A Debris System: Discovery of Extensive Exo-Ring Dust Material
- Size-sorting dust grains in the surface layers of protoplanetary disks
- A new code to study structures in collisionally active, perturbed debris discs. Application to binaries
- New constraints on the dust surrounding HR 4796A
- Debris disks with multiple absorption features in metallic lines: circumstellar or interstellar origin?
- Debris discs in binaries: a numerical study
- Collisions and drag in debris discs with eccentric parent belts
- Asymmetric Heating of the HR 4796A Dust Ring Due to Pericenter Glow
- Debris Disk Radiative Transfer Simulation Tool (DDS)
- On how the optical depth tunes the effects of ISM neutral atom flow on debris disks
- Properties of interstellar wind leading to shape morphology of the dust surrounding HD 61005
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- The vertical structure of debris disks and the impact of gas
- Multiband GPI Imaging of the HR 4796A Debris Disk
- The challenge of measuring the phase function of debris disks. Application to HR\,4796
- Multiband Polarimetric Imaging of HR 4796A with the Gemini Planet Imager
- Characterizing the morphology of the debris disk around the low-mass star GSC~07396-00759
- Probing the eccentricity in protostellar discs -- Modeling kinematics and morphologies
- Eccentric debris disc morphologies I: exploring the origin of apocentre and pericentre glows in face-on debris discs
- 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
- The ALMA survey to Resolve exoKuiper belt Substructures (ARKS): VI. Asymmetries and offsets
- Eccentric debris disc morphologies II: Surface brightness variations from overlapping orbits in narrow eccentric discs
- ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk
- Eccentric dust ring formation in Kozai-Lidov gas disks
- Debris discs in binaries: morphology and photometric signatures
- Polarimetric differential imaging with VLT/NACO. A comprehensive PDI pipeline for NACO data (PIPPIN)
- Debris Rings from Extrasolar Irregular Satellites
- A Multiband Study of the HR 4796A Disk in the Optical Using MagAO-X
- A Multi-Wavelength Study of the Highly Asymmetrical Debris Disk Around HD 111520