Results 21 to 30 of about 10,677 (209)
The Astrophysical Journal, 2023 Recent observations suggest that the first stages of planet formation likely take place in the Class 0/I phase of young stellar object evolution, when the star and the disk are still embedded in an infalling envelope.
Wenrui Xu, Philip J. Armitage
doaj +1 more source
Formation of giant planets around stars with various masses [PDF]
, 2006 We examine the predictions of the core accretion - gas capture model concerning the efficiency of planet formation around stars with various masses. First, we follow the evolution of gas and solids from the moment when all solids are in the form of small
Bodenheimer +32 more
core +2 more sources
Transience of hot dust around sun-like stars [PDF]
, 2006 There is currently debate over whether the dust content of planetary systems is stochastically regenerated or originates in planetesimal belts evolving in steady state.
C. A. Beichman +7 more
core +2 more sources
The Hot Main Kuiper Belt Size Distribution from OSSOS
The Astrophysical Journal Letters, 2023 Using the absolute detection calibration and abundant detections of the Outer Solar System Origins Survey project, we provide population measurements for the main Kuiper Belt.
Jean-Marc Petit +6 more
doaj +1 more source
Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebula
The Astronomical Journal, 2022 The persistence of planetary systems after their host stars evolve into their post-main-sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit infrared excess emission and/or spectral absorption lines associated with
Jonathan P. Marshall +7 more
doaj +1 more source
, 2011 By logging encounters between planetesimals and planets we compute the distribution of encounters in a numerically integrated two planet system that is migrating due to interactions with an exterior planetesimal belt. Capture of an irregular satellite in
Hasan, Imran +2 more
core +1 more source
Stochasticity & Predictability in Terrestrial Planet Formation [PDF]
, 2016 Terrestrial planets are thought to be the result of a vast number of gravitational interactions and collisions between smaller bodies. We use numerical simulations to show that practically identical initial conditions result in a wide array of final ...
Grimm, Simon L. +3 more
core +2 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
doaj +1 more source
Can dust coagulation trigger streaming instability?
, 2014 Streaming instability can be a very efficient way of overcoming growth and drift barriers to planetesimal formation. However, it was shown that strong clumping, which leads to planetesimal formation, requires a considerable number of large grains.
Drazkowska, Joanna +1 more
core +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
core +3 more sources