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Title: Circumstellar Dust Distribution in Systems with Two Planets in Resonance

Journal Article · · The Astronomical Journal (Online)
ORCiD logo [1]; ORCiD logo [2];  [3]
  1. Univ. of Padova, Padova (Italy). Dept. of Physics and Astronomy
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ.-Sternwarte München, Munich (Germany)
+ Show Author Affiliations

Here, we investigate via numerical modeling the effects of two planets locked in resonance, and migrating outward, on the dust distribution of the natal circumstellar disk. We aim to test whether the dust distribution exhibits peculiar features arising from the interplay among the gravitational perturbations of the planets in resonance, the evolution of the gas, and its influence on the dust grain dynamics. We focus on the 3:2 and 2:1 resonance, where the trapping may be caused by the convergent migration of a Jupiter- and Saturn-mass planet, preceding the common gap formation and ensuing outward (or inward) migration. Models show that a common gap also forms in the dust component similarly to what a single, more massive planet would generate and that outward migration leads to a progressive widening of the dust gap and to a decoupling from the gas gap. As the system evolves, a significantly wider gap is observed in the dust distribution, which ceases to overlap with the gas gap in the inner disk regions. At the outer edge of the gas gap, outward migration of the planets produces an overdensity of dust particles, which evolve differently in the 3:2 and 2:1 resonances. For the 3:2 resonance, the dust trap at the gap's outer edge is partly efficient, and a significant fraction of the grains filters through the gap. For the 2:1 resonance, the trap is more efficient, and very few grains cross the gap, while the vast majority accumulate at the outer edge of the gap.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
German Research Foundation (DFG); National Aeronautics and Space Administration (NASA); USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1511253
Report Number(s):
LA-UR--18-31165
Journal Information:
The Astronomical Journal (Online), Journal Name: The Astronomical Journal (Online) Journal Issue: 2 Vol. 157; ISSN 1538-3881
Publisher:
IOP Publishing - AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Trapping dust particles in the outer regions of protoplanetary disks text January 2011
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Dust Filtration by Planet-Induced Gap Edges: Implications for Transitional Disks text January 2012
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Shifting of the resonance location for planets embedded in circumstellar disks text January 2017
Investigating the early evolution of planetary systems with ALMA and the Next Generation Very Large Array text January 2018
Pebble isolation mass --- scaling law and implications for the formation of super-Earths and gas giants text January 2018
Particle accretion onto planets in discs with hydrodynamic turbulence text January 2018
Reversing type II migration: resonance trapping of a lighter giant protoplanet preprint January 2001
A safety net for fast migrators: Interactions between gap-opening and sub-gap-opening bodies in a protoplanetary disk text January 2005
Evolution of Giant Planets in Eccentric Disks text January 2006
FARGO: a fast eulerian transport algorithm for differentially rotating disks text January 1999

Cited By (1)

Probing the Protosolar Disk Using Dust Filtering at Gaps in the Early Solar System journal July 2019

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79 ASTRONOMY AND ASTROPHYSICS
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