Results 51 to 60 of about 4,639 (216)

VUV and mid‐UV photoabsorption cross sections of thin films of glycine and alanine: Application to their photochemistry in the solar system

Photochemistry and Photobiology, EarlyView.
Thin solid films of pure glycine or alanine (thicknesses ranging from 10 to 700 nm) were prepared on MgF2 windows using a vacuum sublimation/recondensation method. VUV‐UV spectroscopy of these films enabled us to characterize new absorption cross sections for glycine and alanine for VUV‐UV radiations between 120 and 300 nm.
Juliette Pastore, Hervé Cottin, Kafila Saïagh, Jodie Belilla, Fabien Stalport, Nicolas Fray, Nathalie Carrasco   +6 more
wiley   +1 more source

The Formation of Jupiter, the Jovian Early Bombardment and the Delivery of Water to the Asteroid Belt: The Case of (4) Vesta

Life, 2014
The asteroid (4) Vesta, parent body of the Howardite-Eucrite-Diogenite meteorites, is one of the first bodies that formed, mostly from volatile-depleted material, in the Solar System. The Dawn mission recently provided evidence that hydrated material was
Diego Turrini, Vladimir Svetsov
doaj   +1 more source

Preface for article collection “Thermal, dynamical, and chemical processes in our early Solar System”

Progress in Earth and Planetary Science, 2022
Upper: Giant impact (Courtesy NASA/JPL-Caltech); chondrule, majorite in shocked enstatite (Courtesy Miyahara); Lower: Collision of planetesimals (Courtesy NASA/JPL-Caltech); Raman mapping of wadsleyite and ringwoodite in Peace River L6 (Courtesy Miyahara
Audrey Bouvier, Makoto Kimura, Yangting Lin, Eiji Ohtani, Thomas Sharp   +4 more
doaj   +1 more source

A low accretion efficiency of planetesimals formed at planetary gap edges [PDF]

, 2022
Observations and models of giant planets indicate that such objects are enriched in heavy elements compared to solar abundances. The prevailing view is that giant planets accreted multiple Earth masses of heavy elements after the end of core formation ...
Helled, Ravit,, Ravit Helled, Petit, Antoine C, Petit, Antoine C., Petit, Antoine C.,, Anders Johansen, Eriksson, Linn E J; https://orcid.org/, Johansen, Anders, Eriksson, Linn E. J., Johansen, Anders,, Valletta, Claudio, Linn E. J. Eriksson, Ronnet, Thomas, Claudio Valletta, Antoine C. Petit, Valletta, Claudio,, Helled, Ravit, Thomas Ronnet, Lund University.   +18 more
core   +1 more source

Quantifying the Effects of Nickel on Earth’s Inner‐Core Nucleation

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The formation of Earth’s solid inner core marks a major transition in the thermal and chemical evolution of the deep Earth, yet its origin remains paradoxical, as initial nucleation appears to require unrealistically large undercooling in the outer core.
Jiahui Zhai, Liangrui Wei, Chen Gao, Yang Sun   +3 more
wiley   +1 more source

Formation of pebble-pile planetesimals

, 2014
Asteroids and Kuiper belt objects are remnant planetesimals from the epoch of planet formation. The first stage of planet formation is the accumulation of dust and ice grains into mm-cm-sized pebbles.
Johansen, Anders,, Wahlberg Jansson, Karl, Karl Wahlberg Jansson, Anders Johansen, Johansen, Anders   +4 more
core   +1 more source

Planetesimal/Debris Disks

, 2023
Review chapter of the book "Planetary Systems Now", to be published by World ...
openaire   +2 more sources

APPLICATION OF GAS DYNAMICAL FRICTION FOR PLANETESIMALS. II. EVOLUTION OF BINARY PLANETESIMALS [PDF]

The Astrophysical Journal, 2016
ABSTRACT One of the first stages of planet formation is the growth of small planetesimals and their accumulation into large planetesimals and planetary embryos. This early stage occurs long before the dispersal of most of the gas from the protoplanetary disk.
Grishin, Evgeni, Perets, Hagai B.
openaire   +2 more sources

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

APPLICATION OF GAS DYNAMICAL FRICTION FOR PLANETESIMALS. I. EVOLUTION OF SINGLE PLANETESIMALS [PDF]

The Astrophysical Journal, 2015
Accepted to ...
Evgeni Grishin, Hagai B. Perets
openaire   +2 more sources