Results 141 to 150 of about 21,167 (278)
Vega's hot dust from icy planetesimals scattered inward by an outward-migrating planetary system
, 2014 Vega has been shown to host multiple dust populations, including both hot exo-zodiacal dust at sub-AU radii and a cold debris disk extending beyond 100 AU.
Bonsor, Amy, Raymond, Sean N.
core +3 more sources
Evidence for universality in the initial planetesimal mass function
, 2017 Planetesimals may form from the gravitational collapse of dense particle clumps initiated by the streaming instability. We use simulations of aerodynamically coupled gas-particle mixtures to investigate whether the properties of planetesimals formed in ...
Armitage, Philip J. +3 more
core +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
The Multifaceted Planetesimal Formation Process [PDF]
, 2014 Accumulation of dust and ice particles into planetesimals is an important step in the planet formation process. Planetesimals are the seeds of both terrestrial planets and the solid cores of gas and ice giants forming by core accretion. Left-over planetesimals in the form of asteroids, trans-Neptunian objects and comets provide a unique record of the ...
Johansen, Anders +5 more
openaire +3 more sources
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
Planetesimal formation by the streaming instability in a photoevaporating disk
, 2017 Recent years have seen growing interest in the streaming instability as a candidate mechanism to produce planetesimals. However, these investigations have been limited to small-scale simulations. We now present the results of a global protoplanetary disk
Carrera, Daniel +4 more
core +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
Planet Formation In Highly Inclined Binary Systems I. Planetesimals Jump Inwards And Pile Up
, 2011 Most detected planet-bearing binaries are in wide orbits, for which a high inclination, $i_B$, between the binary orbital plane and the plane of the planetary disk around the primary is likely to be common.
Armitage +56 more
core +2 more sources
Insights into Planet Formation from Debris Disks: I. The Solar System as an Archetype for Planetesimal Evolution [PDF]
, 2016 Brenda C. Matthews, J. J. Kavelaars
openalex +1 more source