Results 121 to 130 of about 4,639 (216)

Origins of Mercury’s Big Heart of Iron: Exploring Pathways to Form High Core Mass Fraction Planets via N-body Simulations

The Astrophysical Journal
Mercury’s core mass fraction (CMF) is 0.7, more than double that of the other rocky planets in the solar system, which have CMFs of 0.3 or lower. The origin of Mercury’s large, iron-rich core remains unknown. Adding to this mystery, an elusive population
Haniyeh Tajer, Ji Wang, Anna C. Childs, Noah Ferich, Tiger Lu, Hanno Rein   +5 more
doaj   +1 more source

Evolution of Planetesimals Accreted in the Early Solar System

, 2011
The purpose of this presentation is to point out that the origins and abundances of short-lived nu-clides in the early solar system had important conse-quences for "icy planetesimals".
Thomas, P. C., Castillo-Rogez, J. C., Matson, D. L., Johnson, T. V.   +3 more
core  

Survivor bias: divergent fates of the Solar System's ejected vs. persisting planetesimals

, 2020
ApJ Letters, in press. 6 pages, 4 figuresThe orbital architecture of the Solar System is thought to have been sculpted by a dynamical instability among the giant planets.
Armitage, Philip J., Kaib, Nathan A., Raymond, Sean N., Fortney, Jonathan J.   +3 more
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Exocomets in a planet nursery

Nature Communications
Evidence for exocomets has been found in PDS 70, a young planetary system where planets are still forming. The discovery extends exocomet studies into an earlier stage of planetary evolution, when planets, planetesimals and protoplanetary discs coexist.
Daniela Iglesias
doaj   +1 more source

From Stardust to Planetesimals: Contributed Papers [PDF]

, 1996
On June 24 through 26, 1996, a scientific conference entitled From Stardust to Planetesimals was held at the Westin Hotel, Santa Clara, California, as part of the 108th annual meeting of the Astronomical Society of the Pacific.
Tielens, A. G. G. M., Kress, M. E., Pendleton, Y. J.   +2 more
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Argon in β Pictoris–Entrapment and Release of Volatile in Disks

The Astrophysical Journal
Chemical compositions of planets reveal much about their formation environments. Such information is well sought-after in studies of solar system bodies and extrasolar ones.
Yanqin Wu, Kadin Worthen, Alexis Brandeker, Christine Chen   +3 more
doaj   +1 more source

Planetesimals Born Big by Clustering Instability? [PDF]

, 2017
Roughly 100km diameter primitive bodies (today's asteroids and TNOs; [1]) are thought to be the end product of so-called "primary accretion". They dominated the initial mass function of planetesimals, and precipitated the onset of a subsequent stage ...
Hartlep, Thomas, Estrada, Paul R., Cuzzi, Jeffrey N., Simon, Justin I.   +3 more
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The Planetesimal Hypothesis

Science, 1929
H, Jeffreys, F R, Moulton
openaire   +4 more sources

Bridging the Gap, From Planetesimals Formation to the Onset of Pebble Accretion: Investigating the Early Growth of Locally Formed Planetesimals

One of the most promising formation pathways for planetesimals is the concentration of dust via Streaming instability (SI) and the subsequent gravitational collapse into planetesimals.
Kaufmann, Nicolas Leo, Alibert, Yann, Guilera, Octavio, Sebastian, Irina   +3 more
core   +1 more source

Early Solar System Turbulence Constrained by High Oxidation States in the Oldest Noncarbonaceous Planetesimals

The Planetary Science Journal
Early solar system (SS) planetesimals constitute the parent bodies of most meteorites investigated today. Nucleosynthetic isotope anomalies of bulk meteorites have revealed a dichotomy between noncarbonaceous (NC) and carbonaceous (CC) groups ...
Teng Ee Yap, Konstantin Batygin, François L. H. Tissot   +2 more
doaj   +1 more source