Results 101 to 110 of about 3,499 (221)
Carbon to oxygen ratios in extrasolar planetesimals [PDF]
, 2016 Observations of small extrasolar planets with a wide range of densities imply a variety of planetary compositions and structures. Currently, the only technique to measure the bulk composition of extrasolar planetary systems is the analysis of planetary ...
Ansicke, BTG +3 more
core +3 more sources
Impact‐Generated Mixing, Melting and Vaporization of the Early Earth's Crust
Earth and Space Science, Volume 13, Issue 2, February 2026.Abstract Earth's primary accretion was followed by a protracted flux of interplanetary collisions by leftover planetesimals. The effects of the largest collisions—with bodies possibly exceeding 1,000 km diameter—would have been devastating for terrestrial near‐surface environments.
S. Marchi +3 more
wiley +1 more source
Planet formation and disc dynamics in stellar clusters and misaligned binary systems
, 2009 PhDIn this thesis I investigate the formation and dynamics of planets and protoplanetary discs, subject to external gravitational perturbations.
Fragner, Moritz Matthias
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Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract The study of silicate glasses is important to understand the physical and chemical properties of silicate melts under high‐pressure conditions relevant to planetary interiors. We conducted in situ Brillouin spectroscopy measurements on two endmember, low‐impurity CaSiO3 glasses and one Fe, Al, Mg, Ti‐bearing CaSiO3 glass up to 23 GPa.
Wenhao Su +5 more
wiley +1 more source
Terrestrial Planet Formation from Two Source Reservoirs
The Astronomical JournalThis work describes new dynamical simulations of terrestrial planet formation. The simulations started at the protoplanetary disk stage, when planetesimals formed and accreted into protoplanets, and continued past the late stage of giant impacts.
David Nesvorný +4 more
doaj +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract Silicate melts play a crucial role in planetary differentiation. The density contrast between silicate melts and the surrounding solid residue exerts a primary control on many magmatic processes. However, direct measurements of the density of silicate melts at high pressure (P) and temperature (T) conditions remain challenging, particularly ...
Man Xu +6 more
wiley +1 more source
The Bulk Densities of Small Solar System Bodies as a Probe of Planetesimal Formation
The Astrophysical JournalConstraining the formation processes of small solar system bodies is crucial for gaining insights into planetesimal formation. Their bulk densities, determined by their compressive strengths, offer valuable information about their formation history.
Misako Tatsuuma +3 more
doaj +1 more source
Dust evolution during protoplanetary disk buildup enhances CO ice relative to water
Astronomy & AstrophysicsContext. Water ice is expected to be the dominant volatile component of bodies formed in the outer Solar System. However, recent observations of comets and trans-Neptunian objects suggest that the relative abundances of ices can vary substantially, with ...
Drążkowska J.
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract Primitive asteroids and carbonaceous chondrites (CCs) record the history of processes in the early solar system. Visible and shortwave infrared (VSWIR) spectroscopy of primitive asteroids and bulk‐powdered CCs has identified shared spectral features suggestive of shared parent body origins.
S. A. Parra +2 more
wiley +1 more source
The formation and fate of planetesimals at planetary gap edges [PDF]
, 2022 High resolution observations with ALMA have revealed that concentric rings and gaps are common features in protoplanetary disks. The favored mechanism for creating these substructures are planet-disk interactions, in which growing planets open gaps in ...
Eriksson, Linn
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