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Planetesimal Growth in Evolving Protoplanetary Disks: Constraints from the Pebble Supply
The Astrophysical Journal, 2023 In the core accretion model, planetesimals grow by mutual collisions and engulfing millimeter-to-centimeter particles, i.e., pebbles. Pebble accretion can significantly increase the accretion efficiency and help explain the presence of planets on wide ...
Tong Fang +4 more
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Planet formation and disc dynamics in stellar clusters and misaligned binary systems [PDF]
, 2009 PhDIn this thesis I investigate the formation and dynamics of planets and protoplanetary discs, subject to external gravitational perturbations.
Fragner, Moritz Matthias
core +3 more sources
High-resolution Study of Planetesimal Formation by Gravitational Collapse of Pebble Clouds
The Astrophysical Journal, 2023 Planetary embryos are built through the collisional growth of 10–100 km-sized objects called planetesimals, a formerly large population of objects, of which asteroids, comets, and Kuiper Belt objects represent the leftovers from planet formation in our ...
Brooke Polak, Hubert Klahr
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Gravoturbulent Formation of Planetesimals [PDF]
The Astrophysical Journal, 2006 We explore the effect of magnetorotational turbulence on the dynamics and concentrations of boulders in local box simulations of a sub-Keplerian protoplanetary disc. The solids are treated as particles each with an independent space coordinate and velocity. We find that the turbulence has two effects on the solids.
Johansen, Anders +2 more
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Delivery of icy planetesimals to inner planets in the Proxima Centauri planetary system [PDF]
, 2023 The estimates of the delivery of icy planetesimals from the feeding zone of Proxima Centauri c (with mass equal to 7mE, mE is the mass of the Earth) to inner planets b and d were made.
Ipatov, S. I.
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Planetesimal Population Synthesis: are Planetesimals formed in Pressure Bumps?
, 2019 Planetesimals, the smallest building blocks of planets that are gravitationally bound, are believed to be needed in order to form planets. The spacial distribution of these objects that are typically 100 km in diameter is important for the outcome of ...
Lenz, C.
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Binary Formation in Planetesimal Disks. I. Equal Mass Planetesimals [PDF]
Publications of the Astronomical Society of Japan, 2011 As of April 2010, 48 TNO (trans-Neptunian Object) binaries have been found. This is about 6% of known TNOs. However, in previous theoretical studies of planetary formation in the TNO region, the effect of binary formation has been neglected. TNO binaries can be formed through a variety of mechanisms, such as a three-body process, dynamical friction on ...
Daisaka, Junko K. +2 more
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Planets in Binaries: Formation and Dynamical Evolution
Galaxies, 2019 Binary systems are very common among field stars, yet the vast majority of known exoplanets have been detected around single stars. While this relatively small number of planets in binaries is probably partly due to strong observational biases, there is,
Francesco Marzari, Philippe Thebault
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The Astrophysical Journal, 2023 Thanks to “dust-to-planet” simulations (DTPSs), which treat the collisional evolution directly from dust to giant-planet cores in a protoplanetary disk, we showed that giant-planet cores are formed in ≲10 au in several 10 ^5 yr, because porous pebbles ...
Hiroshi Kobayashi, Hidekazu Tanaka
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Dynamics and accretion of planetesimals [PDF]
Progress of Theoretical and Experimental Physics, 2012 We review the basic dynamics and accretion of planetesimals by showing N-body simulations. The orbits of planetesimals evolve through two-body gravitational relaxation: viscous stirring increases the random velocity and dynamical friction realizes the equiparation of the random energy.
Kokubo, Eiichiro, Ida, Shigeru
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