Stirred but not shaken: a multi-wavelength view of HD 16743's debris disc

Abstract

Planetesimals -- asteroids and comets -- are the building blocks of planets in protoplanetary discs and the source of dust, ice and gas in debris discs. Along with planets they comprise the left-over material after star formation that constitutes a planetary system. Planets influence the dynamics of planetesimals, sculpting the orbits of debris belts to produce asymmetries or gaps. We can constrain the architecture of planetary systems, and infer the presence of unseen planetary companions, by high spatial resolution imaging of debris discs. HD~16743 is a relatively young F-type star that hosts a bright edge-on debris disc. Based on far-infrared \textit{Herschel} observations its disc was thought to be stirred by a planetary companion. Here we present the first spatially resolved observations at near-infrared and millimetre wavelengths with \textit{HST} and ALMA, revealing the disc to be highly inclined at $87\fdg3~^{+1\fdg9}_{-2\fdg5}$ with a radial extent of 157.7${}_{-1.5}^{+2.6}$~au and a FWHM of 79.4${}_{-7.8}^{+8.1}$~au ($\Delta R/R=0.5$). The vertical scale height of the disc is $0.13\pm 0.02$, significantly greater than typically assumed unstirred value of 0.05, and could be indicative of stirring of the dust-producing planetesimals within the disc by bodies at least a few times the mass of Pluto up to 18.3~$M_{\oplus }$ in the single object limit.

arXiv comment12 pages, 7 figures, 4 tables, accepted for publication in MNRAS

References in corpus (92)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The chemical composition of the Sun
• Gaia Data Release 2. Summary of the contents and survey properties
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
• Models of Stars, Brown Dwarfs and Exoplanets
• Detection and Characterization of Exoplanets and Disks using Projections on Karhunen-Loeve Eigenimages
• A high accuracy computed water line list
• Scattering by Interstellar Dust Grains: Optical and Ultraviolet
• The AKARI/IRC Mid-Infrared All-Sky Survey
• Density of asteroids
• SPHERE: the exoplanet imager for the Very Large Telescope
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• The Disk Substructures at High Angular Resolution Project (DSHARP): VII. The Planet-Disk Interactions Interpretation
• Debris Disks: Structure, Composition, and Variability
• CASSIS: The Cornell Atlas of Spitzer/IRS Sources
• Variations on Debris Disks: Icy Planet Formation at 30-150 AU for 1-3 Solar Mass Main Sequence Stars
• Probing for Exoplanets Hiding in Dusty Debris Disks: Disk Imaging, Characterization, and Exploration with HST/STIS Multi-Roll Coronagraphy
• Why do protoplanetary disks appear not massive enough to form the known exoplanet population?
• Dust masses of young disks: constraining the initial solid reservoir for planet formation
• Impact of angular differential imaging on circumstellar disk images
• Debris disc stirring by secular perturbations from giant planets
• GALARIO: a GPU Accelerated Library for Analysing Radio Interferometer Observations
• Protoplanetary disk rings and gaps across ages and luminosities
• The newborn planet population emerging from ring-like structures in discs
• Predictions for the secondary CO, C and O gas content of debris discs from the destruction of volatile-rich planetesimals
• Formation of close in Super-Earths \& Mini-Neptunes: Required Disk Masses \& Their Implications
• Direct exoplanet detection and characterization using the ANDROMEDA method: Performance on VLT/NaCo data
• $\beta$ Pictoris' inner disk in polarized light and new orbital parameters for $\beta$ Pictoris b
• Astrometric and photometric accuracies in high contrast imaging: The SPHERE speckle calibration tool (SpeCal)
• Multiple Disk Gaps and Rings Generated by a Single Super-Earth: II. Spacings, Depths, and Number of Gaps, with Application to Real Systems
• Molecular gas in debris disks around young A-type stars
• Structure and evolution of debris disks around F-type stars: I. Observations, database and basic evolutionary aspects
• Modeling Collisional Cascades In Debris Disks: Steep Dust-Size Distributions
• A Complete ALMA Map of the Fomalhaut Debris Disk
• A stellar mass dependence of structured disks: a possible link with exoplanet demographics
• The VLT/NaCo Large program to probe the occurrence of exoplanets and brown dwarfs in wide orbits: I- Sample definition and characterization
• Kuiper Belt-Like Hot and Cold Populations of Planetesimal Inclinations in the $\beta$ Pictoris Belt Revealed by ALMA
• First images of debris disks around TWA 7, TWA 25, HD 35650, and HD 377
• A gap in the planetesimal disc around HD 107146 and asymmetric warm dust emission revealed by ALMA
• An Empirical Planetesimal Belt Radius - Stellar Luminosity Relation
• Self-consistent size and velocity distributions of collisional cascades
• Solution to the debris disc mass problem: planetesimals are born small?
• Vertical structure of debris discs
• Reference star differential imaging of close-in companions and circumstellar disks with the NIRC2 vortex coronagraph at W.M. Keck Observatory
• Rapid contraction of giant planets orbiting the 20 million-years old star V1298 Tau
• Stirring in massive, young debris discs from spatially resolved Herschel images
• Coplanar Circumbinary Debris Disks
• Five Debris Disks Newly Revealed in Scattered Light from the HST NICMOS Archive
• Constraints on Planetesimal Collision Models in Debris Disks
• Planet populations inferred from debris discs: insights from 178 debris systems in the ISPY, LEECH and LIStEN planet-hunting surveys
• The Mass of Stirring Bodies in the AU Mic Debris Disk Inferred from Resolved Vertical Structure
• A gap in HD 92945's broad planetesimal disc revealed by ALMA
• Gas and dust around A-type stars at tens of Myr:signatures of cometary breakup
• Population synthesis of exocometary gas around A stars
• ALMA Detection of Extended Millimeter Halos in the HD 32297 and HD 61005 Debris Disks
• A detailed characterization of HR 8799's debris disk with ALMA in Band 7
• Self-Stirring of Debris Discs by Planetesimals Formed by Pebble Concentration
• On the Ubiquity and Stellar Luminosity Dependence of Exocometary CO Gas: Detection around M Dwarf TWA 7
• First scattered-light images of the gas-rich debris disk around 49 Ceti
• From scattered-light to millimeter emission: A comprehensive view of the Gyr-old system of HD 202628 and its eccentric debris ring
• Multiple Rings of Millimeter Dust Emission in the HD 15115 Debris Disk
• The Scattered Disc of HR 8799
• 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
• From Pebbles and Planetesimals to Planets and Dust: the Protoplanetary Disk--Debris Disk Connection
• ALMA Survey of Lupus Class III Stars: Early Planetesimal Belt Formation and Rapid Disk Dispersal
• Accurate parameters for HD 209458 and its planet from HST spectrophotometry
• The unexpected narrowness of eccentric debris rings: a sign of eccentricity during the protoplanetary disc phase
• Constraining planetesimal stirring: how sharp are debris disc edges?
• Testing Models of Stellar Structure and Evolution I. Comparison with Detached Eclipsing Binaries
• Anatomy of rocky planets formed by rapid pebble accretion I. How icy pebbles determine the core fraction and FeO contents
• HD 104860 and HD 192758: two debris disks newly imaged in scattered-light with HST
• ALMA Observations of the HD~110058 debris disk
• Bright 22 $\mu$m Excess Candidates from WISE All-Sky Catalog and Hipparcos Main Catalog
• Herschel Observations of Dusty Debris Disks
• ALICE Data Release: A revaluation of HST-NICMOS coronagraphic images
• New constraints on the millimetre emission of six debris disks
• Interpreting the extended emission around three nearby debris disc host stars
• Comprehensive analysis of HD 105, a young Solar System analog
• How dusty is alpha Centauri? Excess or non-excess over the infrared photospheres of main-sequence stars
• ALMA imaging of the M-dwarf Fomalhaut C's debris disc
• Four new PLanetesimals Around TYpical and Pre-main seqUence Stars (PLATYPUS) Debris Discs at 8.8mm

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• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) V: Comparison between scattered light and thermal emission
• Characterization of debris disks observed with SPHERE
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) III: The vertical structure of debris disks
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