Results 51 to 60 of about 14,974 (190)

Collisions of inhomogeneous pre-planetesimals [PDF]

open access: yes, 2011
In the framework of the coagulation scenario, kilometre-sized planetesimals form by subsequent collisions of pre-planetesimals of sizes from centimetre to hundreds of metres.
Benz   +28 more
core   +1 more source

Dynamical Stability of Polar Circumbinary Orbits and Planet Formation in the Planetary Disk of 99 Herculis

open access: yesThe Astronomical Journal, 2023
A possible polar-ring debris disk, the dynamics of which can be described by the outer hierarchical restricted three-body problem, has been detected in 99 Herculis.
Ying Wang   +4 more
doaj   +1 more source

Felsic Magmatism on Venus Generated by Crustal Recycling and Melting

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The observation of low viscosity lava flows and shield volcanoes on radar images, combined with X‐ray fluorescence analyses performed by Soviet landers, strongly suggests that Venus's crust is primarily basaltic. However, near‐infrared emissivity data from the Galileo and Venus Express missions indicate that crustal plateaus may be ...
Max Collinet   +4 more
wiley   +1 more source

Capture of Irregular Satellites via Binary Planetesimal Exchange Reactions in Migrating Planetary Systems

open access: yes, 2011
By logging encounters between planetesimals and planets we compute the distribution of encounters in a numerically integrated two planet system that is migrating due to interactions with an exterior planetesimal belt. Capture of an irregular satellite in
Hasan, Imran   +2 more
core   +1 more source

Feasibility of transit photometry of nearby debris discs [PDF]

open access: yes, 2014
Dust in debris discs is constantly replenished by collisions between larger objects. In this paper, we investigate a method to detect these collisions.
Kalas, P.   +2 more
core   +3 more sources

Planetesimal Drift in Eccentric Disks: Possible Outward Migration

open access: yesThe 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

Using Venus, Earth, and Mars to Understand Exoplanet Volatile and Climate Evolution

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract Venus, Earth, and Mars exhibit a wide range of interactions between their deep interiors, surfaces, lower and upper atmospheres, and the Sun, with commensurate variations in the nature of their atmospheres and evolution of their volatiles. By examining these worlds' characteristics and behavior, we can gain some understanding of the breadth of
Bruce M. Jakosky, Paul K. Byrne
wiley   +1 more source

Planetesimal-driven planet migration in the presence of a gas disk

open access: yes, 2010
We report here on an extension of a previous study by Kirsh et al. (2009) of planetesimal-driven migration using our N-body code SyMBA (Duncan et al., 1998). The previous work focused on the case of a single planet of mass Mem, immersed in a planetesimal
Adachi   +38 more
core   +1 more source

Origin of Isotopic Diversity among Carbonaceous Chondrites

open access: yesThe Astrophysical Journal Letters, 2023
Carbonaceous chondrites are some of the most primitive meteorites and derive from planetesimals that formed a few million years after the beginning of the solar system.
Jan L. Hellmann   +7 more
doaj   +1 more source

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