Optical polarized phase function of the HR\,4796A dust ring
arXiv:1905.03603 · doi:10.1051/0004-6361/201935363
Abstract
The scattering properties of the dust originating from debris discs are still poorly known. The analysis of scattered light is however a powerful remote-sensing tool to understand the physical properties of dust particles orbiting other stars. Scattered light is indeed widely used to characterise the properties of cometary dust in the solar system. We aim to measure the morphology and scattering properties of the dust from the debris ring around HR4796A in polarised optical light. We obtained high-contrast polarimetric images of HR4796A in the wavelength range 600-900nm with the SPHERE / ZIMPOL instrument on the Very Large Telescope. We measured for the first time the polarised phase function of the dust in a debris system over a wide range of scattering angles in the optical. We confirm that it is incompatible with dust particles being compact spheres under the assumption of the Mie theory, and propose alternative scenarios compatible with the observations, such as particles with irregular surface roughness or aggregate particles.
arXiv comment12 pages, 11 figures
References in corpus (39)
- Astropy: A Community Python Package for Astronomy
- emcee: The MCMC Hammer
- Gaia Data Release 2. Summary of the contents and survey properties
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
- A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood
- Monte Carlo radiative transfer in protoplanetary disks
- How Observations of Circumstellar Disk Asymmetries Can Reveal Hidden Planets: Pericenter Glow and its Application to the HR 4796 Disk
- Modeling optical properties of cosmic dust grains using a distribution of hollow spheres
- Debris Disks: Structure, Composition, and Variability
- NICMOS Imaging of the HR 4796A Circumstellar Disk
- Nearby debris disk systems with high fractional luminosity reconsidered
- VIP: Vortex Image Processing package for high-contrast direct imaging
- Polarimetry with the Gemini Planet Imager: Methods, Performance at First Light, and the Circumstellar Ring around HR 4796A
- Impact of angular differential imaging on circumstellar disk images
- The Signature of Primordial Grain Growth in the Polarized Light of the AU Mic Debris Disk
- Multiwavelength optical properties of compact dust aggregates in protoplanetary disks
- Opacity of fluffy dust aggregates
- SPHERE / ZIMPOL high resolution polarimetric imager. I. System overview, PSF parameters, coronagraphy, and polarimetry
- 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
- 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
- Light scattering by fractal dust aggregates: I. Angular dependence of scattering
- Images of the Extended Outer Regions of the Debris Ring Around HR 4796 A
- Predictions for Shepherding Planets in Scattered Light Images of Debris Disks
- ALMA observations of the narrow HR 4796A debris 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
- The HIP 79977 debris disk in polarized light
- The HR 4796A Debris System: Discovery of Extensive Exo-Ring Dust Material
- Is there more than meets the eye? Presence and role of submicron grains in debris discs
- New constraints on the dust surrounding HR 4796A
- The Gemini NICI Planet-Finding Campaign: The Offset Ring of HR 4796 A
- Detection of scattered light from the hot dust in HD 172555
- Asymmetric Heating of the HR 4796A Dust Ring Due to Pericenter Glow
- Circumstellar discs: What will be next?
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- Fractal aggregates of sub-micron-sized grains in the young planet-forming disk around IM Lup
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- MAYONNAISE: a morphological components analysis pipeline for circumstellar disks and exoplanets imaging in the near infrared
- The vertical structure of debris disks and the impact of gas
- Using Data Imputation for Signal Separation in High Contrast Imaging
- Spatially resolved spectroscopy of the debris disk HD 32297: Further evidence of small dust grains
- Multiband GPI Imaging of the HR 4796A Debris Disk
- The challenge of measuring the phase function of debris disks. Application to HR\,4796
- MINDS: JWST/NIRCam imaging of the protoplanetary disk PDS 70
- Multiband Polarimetric Imaging of HR 4796A with the Gemini Planet Imager
- REXPACO: an algorithm for high contrast reconstruction of the circumstellar environment by angular differential imaging
- Dust production in the debris disk around HR 4796 A
- Observed polarized scattered light phase functions of planet-forming disks
- Debris Disk Color with the Hubble Space Telescope
- Characterizing the morphology of the debris disk around the low-mass star GSC~07396-00759
- HD 117214 debris disk: scattered-light images and constraints on the presence of planets
- Direct imaging of exoplanets: Legacy and prospects
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- The high-albedo, low polarization disk around HD 114082 harbouring a Jupiter-sized transiting planet
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- Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light
- Polarimetric and radiative transfer modelling of HD 172555
- Linking studies of tiny meteoroids, zodiacal dust, cometary dust and circumstellar disks
- The ALMA survey to Resolve exoKuiper belt Substructures (ARKS): VI. Asymmetries and offsets
- A model grid for the reflected light from transition disks
- Characterization of debris disks observed with SPHERE
- Quadrant polarization parameters for the scattered light of circumstellar disks. Analysis of debris disk models and observations of HR 4796A
- Multi-wavelength aperture polarimetry of debris disc host stars
- Debris discs in binaries: morphology and photometric signatures
- An HST/STIS View of Protoplanetary Disks in Upper Scorpius: Observations of Three Young M-Stars
- Polarimetric differential imaging with VLT/NACO. A comprehensive PDI pipeline for NACO data (PIPPIN)
- RHAPSODIE: Reconstruction of High-contrAst Polarized SOurces and Deconvolution for cIrcumstellar Environments
- The Disks In Scorpius-Centaurus Survey (DISCS) I: Four Newly-Resolved Debris Disks in Polarized Intensity Light
- A Multiband Study of the HR 4796A Disk in the Optical Using MagAO-X
- Resolution and calibration effects in high contrast polarimetric imaging of circumstellar scattering regions
- What you see is not necessarily what you get: Interpreting near-infrared scattering phase functions of debris discs
- A Multi-Wavelength Study of the Highly Asymmetrical Debris Disk Around HD 111520