Results 111 to 120 of about 11,561 (252)

Collisional Processes of Planetesimals with a Protoplanet under the Gravity of the Proto-Sun [PDF]

, 1983
S. NISHIDA
openalex   +1 more source

Intruder Alert: Breaking Resonant Chains with Planetesimal Flybys

The Astrophysical Journal Letters
The orbital architectures of compact “Kepler-multi” (KM) exoplanet systems record their complicated dynamical histories. The “breaking-the-chains” hypothesis proposes that compact systems typically form in chains of mean-motion resonances and ...
Jiaru Li, Christopher E. O’Connor, Frederic A. Rasio   +2 more
doaj   +1 more source

Gravitational instability and clustering in a disk of planetesimals [PDF]

, 2004
P. Tanga, S. J. Weidenschilling, Patrick Michel, D. C. Richardson   +3 more
openalex   +1 more source

Testing the Jeans, Toomre, and Bonnor–Ebert Concepts for Planetesimal Formation: 3D Streaming-instability Simulations of Diffusion-regulated Formation of Planetesimals [PDF]

, 2021
Hubert Klahr, Andreas Schreiber
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Gaia-GIC-1: An Evolving Catastrophic Planetesimal Collision Candidate

The Astrophysical Journal Letters
We report the discovery of the optical dipper and low-luminosity infrared stellar transient Gaia20ehk (hereafter, Gaia-GIC-1), which is currently undergoing high-amplitude variability due to transiting dusty material. In this work, we identify Gaia-GIC-1
Anastasios Tzanidakis, James R. A. Davenport   +1 more
doaj   +1 more source

Vom Staubkorn zum Planetesimal [PDF]

Physik in unserer Zeit, 2019
ZusammenfassungDurch astronomische Beobachtungen, numerische Simulationen und Laborexperimente sind wir erstmals in der Lage, ein in sich geschlossenes Bild der Entstehung der ersten größeren Körper in jungen Planetensystemen zu zeichnen. Mikroskopisch kleine Staubpartikel verklumpen durch haftende Stöße zu millimeter‐ bis zentimetergroßen Agglomeraten.
openaire   +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

Evading the dust fragmentation barrier with the streaming instability in protoplanetary disks

Astronomy & Astrophysics
Context. The streaming instability (SI) is a leading candidate for reaching solid densities sufficient to trigger the gravitational collapse needed for the formation of planetesimals. However, dust growth barriers appear to impede the ability to assemble
Vallucci-Goy V., Lebreuilly U., Mac Low M.-M., Hennebelle P.   +3 more
doaj   +1 more source

Linking planetesimal and dust content in protoplanetary disks via a local toy model [PDF]

, 2019
Konstantin Gerbig, Christian T. Lenz, Hubert Klahr   +2 more
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Planetesimal Drift in Eccentric Disks: Possible Outward Migration

The Astrophysical Journal
Radial drift of solid particles in the protoplanetary disk is often invoked as a threat to planet formation, as it removes solid material from the disk before it can be assembled into planets.
Kedron Silsbee
doaj   +1 more source