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Stirred but not shaken : a multi-wavelength view of HD 16743's debris disc
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Marshall, Jonathan, Milli, J., Choquet, E., del Burgo, C., Kennedy, Grant M., Kemper, F, Wyatt, M. C., Kral, Q. and Soummer, R. (2023) Stirred but not shaken : a multi-wavelength view of HD 16743's debris disc. Monthly Notices of the Royal Astronomical Society, 521 (4). pp. 5940-5951. stad913. doi:10.1093/mnras/stad913 ISSN 1745-3933.
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Official URL: https://doi.org/10.1093/mnras/stad913
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 +2.6−1.5 ~au and a FWHM of 79.4 +8.1−7.8 ~au ( ΔR/R=0.5 ). The vertical scale height of the disc is 0.13 ± 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⊕ in the single object limit.
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Planets -- Origin, Solar system -- Origin, Disks (Astrophysics), Protoplanetary disks, Cosmic dust, Circumstellar matter | |||||||||||||||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||||||||
Publisher: | Oxford University Press | |||||||||||||||||||||
ISSN: | 1745-3933 | |||||||||||||||||||||
Official Date: | June 2023 | |||||||||||||||||||||
Dates: |
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Volume: | 521 | |||||||||||||||||||||
Number: | 4 | |||||||||||||||||||||
Page Range: | pp. 5940-5951 | |||||||||||||||||||||
Article Number: | stad913 | |||||||||||||||||||||
DOI: | 10.1093/mnras/stad913 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Jonathan P Marshall, J Milli, E Choquet, C del Burgo, G M Kennedy, F Kemper, M C Wyatt, Q Kral, R Soummer, Stirred but not shaken: A multi-wavelength view of HD 16743’s debris disc, Monthly Notices of the Royal Astronomical Society, 2023;, stad913,is available online at: https://doi.org/10.1093/mnras/stad913. | |||||||||||||||||||||
Access rights to Published version: | Free Access (unspecified licence, 'bronze OA') | |||||||||||||||||||||
Date of first compliant deposit: | 3 April 2023 | |||||||||||||||||||||
Date of first compliant Open Access: | 5 April 2023 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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