Results 31 to 40 of about 14,974 (190)
Life, 2014 The asteroid (4) Vesta, parent body of the Howardite-Eucrite-Diogenite meteorites, is one of the first bodies that formed, mostly from volatile-depleted material, in the Solar System. The Dawn mission recently provided evidence that hydrated material was
Diego Turrini, Vladimir Svetsov
doaj +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
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
Numerical simulations for terrestrial planets formation
EPJ Web of Conferences, 2011 We investigate the formation of terrestrial planets in the late stage of planetary formation using two-planet model. At that time, the protostar has formed for about 3 Myr and the gas disk has dissipated.
Ji J., Zhang N.
doaj +1 more source
3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159
Meteoritics &Planetary Science, EarlyView.Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé +9 more
wiley +1 more source
Fast accretion of small planetesimals by protoplanetary cores
, 2003 We explore the dynamics of small planetesimals coexisting with massive protoplanetary cores in a gaseous nebula. Gas drag strongly affects the motion of small bodies leading to the decay of their eccentricities and inclinations, which are excited by the ...
Greenberg J. M. +4 more
core +2 more sources
Clearing residual planetesimals by sweeping secular resonances in transitional disks: a lone-planet scenario for the wide gaps in debris disks around Vega and Fomalhaut [PDF]
, 2017 Extended gaps in the debris disks of both Vega and Fomalhaut have been observed. These structures have been attributed to tidal perturbations by multiple super-Jupiter gas giant planets.
Kouwenhoven, M. B. N. +4 more
core +2 more sources
Experimental constraints on the origin of metal and carbon in ureilite meteorites
Meteoritics &Planetary Science, EarlyView.Abstract Ureilites are carbon‐rich ultramafic achondrites that display unique textures, including strips of metal and carbon phases situated along grain boundaries and in fractures. Shock metamorphism observed in ureilites suggests an episode of brittle deformation caused by impact disruption of their parent body.
Nicolas P. Walte +2 more
wiley +1 more source
Dynamics and Accretion of Planetesimals
, 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 ...
Ida, Shigeru, Kokubo, Eiichiro
core +1 more source
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