Results 141 to 150 of about 16,853 (286)

Streaming Instabilities in Accreting Protoplanetary Disks: A Parameter Study

The Astrophysical Journal
The streaming instability (SI) is currently the leading candidate for triggering planetesimal formation in protoplanetary disks. Recently, a novel variation, the “azimuthal-drift” streaming instability (AdSI), was discovered in disks exhibiting laminar ...
Shiang-Chih Wang, Min-Kai Lin
doaj   +1 more source

An alternative origin for debris rings of planetesimals

, 2012
Core Accretion, the most widely accepted scenario for planet formation, postulates existence of km-sized solid bodies, called planetesimals, arranged in a razor-thin disc in the earliest phases of planet formation.
Alibert, Armitage, Aumann, Baruteau, Bernstein, Boley, Boley, Boley, Boss, Boss, Bottke, Cha, Cuzzi, Donnison, Dunham, Forgan, Gingold, Goldreich, Gomes, Helled, Hellyer, Ida, Ida, Ilee, Johansen, Kenyon, Larson, Lucy, Machida, Mayer, McCrea, Michael, Mizuno, Monaghan, Morbidelli, Nayakshin, Nayakshin, Nayakshin, Nayakshin, Nayakshin, Nayakshin, Nayakshin, Nesvorný, Nesvorný, Nesvorný, Nesvorný, Perri, Pollack, Rafikov, Rafikov, Rafikov, Rees, Rice, Safronov, Sergei Nayakshin, Seung-Hoon Cha, Shapiro, Springel, Springel, Stevenson, Stewart, Tanaka, Vorobyov, Vorobyov, Vorobyov, Weidenschilling, Wyatt, Wyatt, Wyatt, Youdin, Youdin, Zubovas, Zuckerman   +72 more
core   +1 more source

Col-OSSOS: Colors of the Interstellar Planetesimal 1I/‘Oumuamua [PDF]

, 2017
The recent discovery by Pan-STARRS1 of 1I/2017 U1 (‘Oumuamua), on an unbound and hyperbolic orbit, offers a rare opportunity to explore the planetary formation processes of other stars and the effect of the interstellar environment on a planetesimal ...
M. Bannister, M. Schwamb, W. Fraser, M. Marsset, A. Fitzsimmons, S. Benecchi, P. Lacerda, R. Pike, J. Kavelaars, J. Kavelaars, Adam B. Smith, S. Stewart, Shiang-Yu Wang, M. Lehner, M. Lehner, M. Lehner   +15 more
semanticscholar   +1 more source

Fast Radio Bursts and Interstellar Objects

The Astrophysical Journal
Fast radio bursts (FRBs) are transient radio events with millisecond-scale durations and debated origins. Collisions between planetesimals and neutron stars (NSs) have been proposed as a mechanism to produce FRBs; the planetesimal strength, size, and ...
Dang Pham, Matthew J. Hopkins, Chris Lintott, Michele T. Bannister, Hanno Rein   +4 more
doaj   +1 more source

Planetesimal/Debris Disks

, 2023
Review chapter of the book "Planetary Systems Now", to be published by World ...
openaire   +2 more sources

PLANETESIMAL FORMATION BY SUBLIMATION

The Astrophysical Journal, 2011
This paper proposes a scenario for the formation of rocky plantesimals. In this scenario, the infall of an icy dust aggregate to the central star occurs because of gas drag in the protoplanetary nebula. The temperature of the aggregate rises and H2O ice sublimates within the snow line.
Etsuko Saito, Sin-iti Sirono
openaire   +2 more sources

Radially resolved simulations of collapsing pebble clouds in protoplanetary discs

, 2017
We study the collapse of pebble clouds with a statistical model to find the internal structure of comet-sized planetesimals. Pebble-pebble collisions occur during the collapse and the outcome of these collisions affect the resulting structure of the ...
Jansson, Karl Wahlberg, Johansen, Anders
core   +1 more source

Chondrule Survivability in the Solar Nebula

The Astrophysical Journal
The lifetime of millimeter-sized dust grains, such as chondrules, in the nominal solar nebula model is limited to ∼10 ^5 yr, due to an inward drift driven by gas drag.
Tetsuo Taki, Shigeru Wakita
doaj   +1 more source

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

Impact of planet--planet scattering on the formation and survival of debris disks

, 2014
Planet--planet scattering is a major dynamical mechanism able to significantly alter the architecture of a planetary system. In addition to that, it may also affect the formation and retention of a debris disk by the system.
Marzari, F.
core   +1 more source