Results 81 to 90 of about 505 (181)

A Search for Collisions and Planet–Disk Interactions in the Beta Pictoris Disk with 26 Years of High-precision HST/STIS Imaging

The Astrophysical Journal
β Pictoris's well-studied debris disk and two known giant planets, in combination with the stability of the Hubble Space Telescope’s Space Telescope Imaging Spectrograph (HST/STIS) (and now also JWST), offers a unique opportunity to test planet–disk ...
Arin M. Avsar, Kevin Wagner, Dániel Apai, Christopher C. Stark, Mark C. Wyatt   +4 more
doaj   +1 more source

Chalcogen isotopes reveal limited volatile contribution from late veneer to Earth. [PDF]

Sci Adv, 2023
Wang W, Walter MJ, Brodholt JP, Huang S, Petaev MI.   +4 more
europepmc   +1 more source

Massive Debris Disks May Hinder Secular Stirring by Planetary Companions: An Analytic Proof of Concept

The Astrophysical Journal
Debris 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

Convective Overstability in Radially Global Protoplanetary Disks. I. Pure Gas Dynamics

The Astrophysical Journal
Protoplanetary disks are prone to several hydrodynamic instabilities. One candidate, convective overstability (COS), can drive radial semiconvection that may influence dust dynamics and planetesimal formation.
Marius Lehmann, Min-Kai Lin
doaj   +1 more source

Energy dissipation caused by impact or slow compression of dust aggregates consisting of fibers

Progress in Earth and Planetary Science
In the process of planetesimal formation, the mechanical properties of highly porous dust aggregates play a key role. However, it has not been easy to form highly porous dust aggregates in laboratory experiments.
Shiori Iwano, Rena Tanaka, Hiroaki Katsuragi   +2 more
doaj   +1 more source

GANBISS: a new GPU accelerated N-body code for binary star systems. [PDF]

Celest Mech Dyn Astron, 2023
Zimmermann M, Pilat-Lohinger E.
europepmc   +1 more source

The Surfaces of Small to Midsize Plutinos: Evidence of an Association between Inclination and Surface Type

The Planetary Science Journal
Being one of the most populated mean motion resonances (MMRs) with Neptune and lying close to the inner boundary of the present-day cold classical disk, observations of the orbital and surface class distributions of the plutinos in the 3:2 MMR provide ...
Cameron Collyer, Rosemary E. Pike, Ying-Tung Chen, Mike Alexandersen, Mark Comte, Samantha M. Lawler, Bryan J. Holler, J. J. Kavelaars, Lowell Peltier   +8 more
doaj   +1 more source

Simulations of Multiple Dust Ring Formation in a Subsolar-metallicity Protoplanetary Disk

The Astrophysical Journal
Super-Earths exist around subsolar-metallicity host stars with a frequency comparable to that around solar-metallicity stars, suggesting efficient assembly of dust grains even in metal-deficient environments.
Ryoki Matsukoba, Eduard I. Vorobyov, Takashi Hosokawa   +2 more
doaj   +1 more source

Organic Matter in the Asteroid Ryugu: What We Know So Far. [PDF]

Life (Basel), 2023
Potiszil C, Yamanaka M, Sakaguchi C, Ota T, Kitagawa H, Kunihiro T, Tanaka R, Kobayashi K, Nakamura E.   +8 more
europepmc   +1 more source

Imaging of the Vega Debris System Using JWST/MIRI

The Astrophysical Journal
We present images of the Vega planetary debris disk obtained at 15.5, 23, and 25.5 μ m with the Mid-Infrared Instrument on JWST. The debris system is remarkably symmetric, smooth, and centered accurately on the star.
Kate Y. L. Su, András Gáspár, George H. Rieke, Renu Malhotra, Luca Matrá, Schuyler Grace Wolff, Jarron M. Leisenring, Charles Beichman, Marie Ygouf   +8 more
doaj   +1 more source