Investigating the Early Evolution of Planetary Systems with ALMA and the Next Generation Very Large Array

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dc.citation.articleNumber110
dc.citation.journalTitleThe Astrophysical Journal
dc.citation.volumeNumber853
dc.contributor.authorRicci, Luca
dc.contributor.authorLiu, Shang-Fei
dc.contributor.authorIsella, Andrea
dc.contributor.authorLi, Hui
dc.date.accessioned2018-07-11T19:50:55Z
dc.date.available2018-07-11T19:50:55Z
dc.date.issued2018
dc.description.abstractWe investigate the potential of the Atacama Large Millimeter/submillimeter Array (ALMA) and the Next Generation Very Large Array (ngVLA) to observe substructures in nearby young disks which are due to the gravitational interaction between disk material and planets close to the central star. We simulate the gas and dust dynamics in the disk using the LA-COMPASS hydrodynamical code. We generate synthetic images for the dust continuum emission at submillimeter to centimeter wavelengths and simulate ALMA and ngVLA observations. We explore the parameter space of some of the main disk and planet properties that would produce substructures that can be visible with ALMA and the ngVLA. We find that ngVLA observations with an angular resolution of 5 milliarcsec at 3 mm can reveal and characterize gaps and azimuthal asymmetries in disks hosting planets with masses down to $\approx 5\,{M}_{\oplus }\approx 1\mbox{--}5\,\mathrm{au}$ from a solar-like star in the closest star-forming regions, whereas ALMA can detect gaps down to planetary masses of $\approx 20\,{M}_{\oplus }$ at 5 au. Gaps opened by super-Earth planets with masses $\approx 5\mbox{--}10\,{M}_{\oplus }$ are detectable by the ngVLA in the case of disks with low viscosity ($\alpha \sim {10}^{-5}$) and low pressure scale height (h ≈ 0.025 au at 5 au). The ngVLA can measure the proper motion of azimuthal asymmetric structures associated with the disk–planet interaction as well as possible circumplanetary disks on timescales as short as one to a few weeks for planets at 1–5 au from the star.
dc.identifier.citationRicci, Luca, Liu, Shang-Fei, Isella, Andrea, et al.. "Investigating the Early Evolution of Planetary Systems with ALMA and the Next Generation Very Large Array." <i>The Astrophysical Journal,</i> 853, (2018) IOP Publishing: https://doi.org/10.3847/1538-4357/aaa546.
dc.identifier.doihttps://doi.org/10.3847/1538-4357/aaa546
dc.identifier.urihttps://hdl.handle.net/1911/102400
dc.language.isoeng
dc.publisherIOP Publishing
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleInvestigating the Early Evolution of Planetary Systems with ALMA and the Next Generation Very Large Array
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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