Results 31 to 40 of about 22,197 (291)
PLANETESIMAL DISK MICROLENSING [PDF]
The Astrophysical Journal, 2009 Motivated by debris disk studies, we investigate the gravitational microlensing of background starlight by a planetesimal disk around a foreground star. We use dynamical survival models to construct a plausible example of a planetesimal disk and study its microlensing properties using established ideas of microlensing by small bodies. When a solar-type
Heng, Kevin, Keeton, Charles R.
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Origin of water in the inner Solar System: Planetesimals scattered inward during Jupiter and Saturn's rapid gas accretion [PDF]
, 2017 There is a long-standing debate regarding the origin of the terrestrial planets’ water as well as the hydrated C-type asteroids. Here we show that the inner Solar System’s water is a simple byproduct of the giant planets’ formation.
S. Raymond, A. Izidoro
semanticscholar +1 more source
Planetesimals to terrestrial planets: Collisional evolution amidst a dissipating gas disk [PDF]
Icarus (New York, N.Y. 1962), 2019 We present numerical simulations of terrestrial planet formation that examine the growth continuously from planetesimals to planets in the inner Solar System.
K. Walsh, H. Levison
semanticscholar +1 more source
Solution to the debris disc mass problem: planetesimals are born small? [PDF]
, 2020 Debris belts on the periphery of planetary systems, encompassing the region occupied by planetary orbits, are massive analogues of the Solar system's Kuiper belt.
A. Krivov, M. Wyatt
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
, 1998 A planet orbiting in a disk of planetesimals can experience an instability in which it migrates to smaller orbital radii. Resonant interactions between the planet and planetesimals remove angular momentum from the planetesimals, increasing their ...
Hansen, Brad +3 more
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Meteorite evidence for partial differentiation and protracted accretion of planetesimals
Science Advances, 2020 A broad spectrum of fully differentiated, partially melted, and possibly unmelted objects populated the early solar system. Modern meteorite classification schemes assume that no single planetary body could be source of both unmelted (chondritic) and ...
C. Maurel +8 more
semanticscholar +1 more source
Circumbinary Planet Formation in the Kepler-16 System. II. A Toy Model for In-situ Planet Formation within a Debris Belt [PDF]
, 2014 Recent simulations have shown that the formation of planets in circumbinary configurations (such as those recently discovered by Kepler) is dramatically hindered at the planetesimal accretion stage.
Meschiari, Stefano
core +2 more sources