Results 131 to 140 of about 3,499 (221)

The Planetesimal Hypothesis

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

Considering Contact Forces during the Formation of Planetesimals by Gravitational Collapse: Mutual Orbits, Spin States, and Shapes

The Astrophysical Journal
In this work, we apply a soft-sphere discrete element method (SSDEM) within the PKDGRAV N -body integrator to investigate the formation of planetesimal systems through the gravitational collapse of clouds of superparticles. Previously published numerical
Jackson T. Barnes, Stephen R. Schwartz, Seth A. Jacobson   +2 more
doaj   +1 more source

Carbonaceous Chondrites Provide Evidence for Late-stage Planetesimal Formation in a Pressure Bump

The Astrophysical Journal
Carbonaceous chondrites are samples from planetesimals that formed 2–4 million years after solar system formation began. They consist of distinct dust components formed at different times and locations in the accretion disk, and whose abundances in ...
Nerea Gurrutxaga, Joanna Drążkowska, Vignesh Vaikundaraman, Thorsten Kleine   +3 more
doaj   +1 more source

Gas Pressure Driven Screening Forces and Pebble Aggregation: A Pathway for Growth in Planet Formation

The Astrophysical Journal
The formation of planetesimals from centimeter-sized pebbles in protoplanetary disks faces significant barriers, including fragmentation and radial drift.
Mukesh Kumar Vyas
doaj   +1 more source

Collision rates of planetesimals near mean-motion resonances

, 2020
In circumstellar discs, collisional grinding of planetesimals produces second-generation dust which can be observed through thermal emission. While it remains unclear when second- generation dust first becomes a major component of the total dust content,
Wallace, Spencer
core  

From Stardust to Planetesimals: Contributed Papers

, 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
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
core  

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

Phosphorus-nitrogen systematics of first-generation planetesimals constrain life-essential element delivery to Earth. [PDF]

Sci Adv
Pathak D, Dasgupta R, Iyer N.
europepmc   +1 more source

Asteroid sample return missions are critical for understanding our Solar System. [PDF]

Nat Commun
Bates H.
europepmc   +1 more source