Results 111 to 120 of about 3,499 (221)
Formation of the terrestrial planets from planetesimals
, 1991 Formation of the terrestrial planets from planetesimals is discussed. The following subject areas are covered: (1) formation of the original planetesimals; (2) growth of planetesimals into planetary embryos; and (3) growth of runaway planetary embryos ...
Wetherill, George W.
core
Planet formation in slightly inclined binary systems
EPJ Web of Conferences, 2011 One of the major problems of planet formation in close binary systems, such as α Centauri AB, is the formation of planetary embryos or cores by mutual accretion of km-sized planetesimals.
Ge J., Xie J.-W., Zhou J.-L.
doaj +1 more source
Tidal Disruption of Planetesimals from an Eccentric Debris Disk Following a White Dwarf Natal Kick
The Astrophysical Journal LettersThe surfaces of many white dwarfs are polluted by metals, implying a recent accretion event. The tidal disruption of planetesimals is a viable source of white dwarf pollution and offers a unique window into the composition of exoplanet systems.
Tatsuya Akiba +2 more
doaj +1 more source
Effects of stellar X-ray photoevaporation on planetesimal formation via the streaming instability
Astronomy & AstrophysicsContext. The formation of planetesimals via the streaming instability (SI) is a crucial step in planet formation, yet its triggering conditions and efficiency are highly sensitive to both disk properties and specific evolutionary processes. Aims.
Ying Xuchu +9 more
doaj +1 more source
PLANETESIMAL FORMATION INDUCED BY SINTERING [PDF]
The Astrophysical Journal, 2011 Sintering of H2O ice proceeds in an icy dust aggregate as the temperature increases due to the infall to the central star. By numerical simulations, I show that fragmentation of the aggregate by sintering occurs at a particular region of a protoplanetary nebula. The fragments accumulate at the region because their infalling velocity is low.
openaire +1 more source
The Formation of Planetesimals: Building Bricks for Planetary Systems [PDF]
, 2016 The asteroids and Kuiper Belt objects are left overs of building material for our earth and the other planets in our solar systems from 4.567 billion years ago.
Klahr, H., Schreiber, A.
core
The Astrophysical JournalDebris disks or exo-Kuiper belts, detected through their thermal or scattered emission from their dusty components, are ubiquitous around main-sequence stars.
Antranik A. Sefilian
doaj +1 more source
Silica-rich volcanism in the early solar system dated at 4.565 Ga
Nature Communications, 2018 Achondritic meteorites can record volcanism and crust formation on planetesimals in the early Solar System. Here, the authors date the Northwest Africa 11119 meteorite with an Al-Mg age of 4564.8 ± 0.3 Ma indicating that this is the earliest evidence of ...
Poorna Srinivasan +7 more
doaj +1 more source
Oligarchic Growth of Protoplanets in Planetesimal Rings
The Astrophysical JournalIn the standard planet formation scenario, planetesimals are assumed to form throughout the protoplanetary disk and to be smoothly distributed in the radial direction except for the snowline.
Yuki Kambara, Eiichiro Kokubo
doaj +1 more source
Planetesimals Born Big by Clustering Instability?
, 2017 Roughly 100km diameter primitive bodies (today's asteroids and TNOs; [1]) are thought to be the end product of so-called "primary accretion". They dominated the initial mass function of planetesimals, and precipitated the onset of a subsequent stage ...
Hartlep, Thomas +3 more
core