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Topics on Planet-Disk Interaction and Solar Convection

, 2019
In this thesis I focus on two topics: planet-disk interaction and solar convection. These two seemingly separate topics are connected via a similar separation of timescales. Planets excite spiral waves in their disks on fast timescales compared to the time for the disk to viscously adjust to the angular momentum deposited by those waves.
openaire   +1 more source

Suppression of Resonant Overstability at Sharp Migration Gradients

The Astrophysical Journal
Mean-motion resonances are expected to frequently arise at the inner edges of protoplanetary disks, where planet–disk interactions facilitate large-scale orbital convergence.
Konstantin Batygin, Ian R. Brunton, Alessandro Morbidelli   +2 more
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Kinematic signatures of planet-disk interactions in vertical shear instability

Astronomy & Astrophysics
Context. Planets are thought to form inside weakly ionized regions of protoplanetary disks, where turbulence creates ideal conditions for solid growth. However, the nature of this turbulence is still uncertain. In fast cooling parts of this zone the vertical shear instability (VSI) can operate, inducing a low level of gas turbulence and large-scale gas
Barraza-Alfaro, Marcelo, Flock, Mario, Henning, Thomas   +2 more
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Sculpting of Exoplanetary Systems Driven by a Misaligned Disk and Stellar Oblateness: Origin of Perpendicular Orbits in HD 3167

The Astrophysical Journal Letters
A significant proportion of exoplanets have been detected with highly tilted or even polar orbits relative to their host stars’ equatorial planes. These unusual orbital configurations are often linked to postdisk secular interactions among multiple ...
Tao Fu, Yue Wang
doaj   +1 more source

Bifurcated Evolutionary Pathways in Multiplanet Systems Driven by Misaligned Protoplanetary Disks

The Astrophysical Journal Letters
Stellar obliquities, or spin–orbit angles, prevalent in exoplanet systems, can impose important constraints on their formation and evolution histories.
Tao Fu, Yue Wang, Weiduo Hu
doaj   +1 more source

Implications for the formation of Oort cloud-like structures and interstellar comets in dense environments

Astronomy & Astrophysics
Most stars form in dense stellar environments, where frequent close encounters can strongly perturb and reshape the early architecture of planetary systems.
Torres Santiago
doaj   +1 more source

Resonant Chains and the Convergent Migration of Planets in Protoplanetary Disks

The Astronomical Journal
An increasing number of compact planetary systems with multiple planets in a resonant chain have been detected. The resonant chain must be maintained by convergent migration of the planets due to planet–disk interactions if it is formed before the ...
Ka Ho Wong, Man Hoi Lee
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Excitation of planetary inclinations via dynamical bifurcations driven by misaligned disks

Astronomy & Astrophysics
Context. Primordial misalignments between protoplanetary disks and their host stars’ spin axes have been proposed to be important origins of the widespread stellar obliquities observed in exoplanets. Recent works have further revealed nontrivial and rich
Fu Tao, Wang Yue
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A Uniform Analysis of Debris Disks with the Gemini Planet Imager. I. An Empirical Search for Perturbations from Planetary Companions in Polarized Light Images

The Astrophysical Journal
The Gemini Planet Imager (GPI) has excelled in imaging debris disks in the near-infrared. The GPI Exoplanet Survey imaged 24 debris disks in polarized H -band light, while other programs observed half of these disks in polarized J and/or K 1 bands. Using
Katie A. Crotts, Brenda C. Matthews, Gaspard Duchêne, Thomas M. Esposito, Ruobing Dong, Justin Hom, Rebecca Oppenheimer, Malena Rice, Schuyler G. Wolff, Christine H. Chen, Clarissa R. Do Ó, Paul Kalas, Briley L. Lewis, Alycia J. Weinberger, David J. Wilner, Mark Ammons, Pauline Arriaga, Robert J. De Rosa, John H. Debes, Michael P. Fitzgerald, Eileen C. Gonzales, Dean C. Hines, Sasha Hinkley, A. Meredith Hughes, Ludmilla Kolokolova, Eve J. Lee, Ronald A. López, Bruce Macintosh, Johan Mazoyer, Stanimir Metchev, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Jenny Patience, Marshall D. Perrin, Laurent Pueyo, Fredrik T. Rantakyrö, Bin B. Ren, Glenn Schneider, Remi Soummer, Christopher C. Stark   +39 more
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Reading between the Rings: Observed Dust Ring Properties as Probes of Planet Masses

The Astrophysical Journal
We hypothesize that dust rings in protoplanetary disks formed by an embedded planet should have properties that reflect the planet’s mass. We use 2D hydrodynamical simulations of planet–disk interactions to investigate this, focusing on planets ranging ...
Amena Faruqi, Jessica Speedie, Ralph E. Pudritz, Farzana Meru   +3 more
doaj   +1 more source