Results 21 to 30 of about 505 (181)
PLANETESIMAL COMPOSITIONS IN EXOPLANET SYSTEMS [PDF]
The Astrophysical Journal, 2012 We have used recent surveys of the composition of exoplanet host stars to investigate the expected composition of condensed material in planetesimals formed beyond the snow line in the circumstellar nebulae of these systems. Of the major solid forming elements, we find that, as for the Sun, the C and O abundances (and particularly the C/O abundance ...
Johnson, T.V. +3 more
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Binary formation in planetesimal disks. II. Planetesimals with a mass spectrum [PDF]
Publications of the Astronomical Society of Japan, 2014 Abstract Many massive objects have been found in the outer region of the solar system. How they were formed and evolved has not been well understood, although there have been intensive studies of the accretion process of terrestrial planets. One of the mysteries is the existence of binary planetesimals with near-equal mass components and
Kominami, Junko D., Makino, Junichiro
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The Hot Main Kuiper Belt Size Distribution from OSSOS
The Astrophysical Journal Letters, 2023 Using the absolute detection calibration and abundant detections of the Outer Solar System Origins Survey project, we provide population measurements for the main Kuiper Belt.
Jean-Marc Petit +6 more
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Planetesimal Disk Evolution Driven by Planetesimal-Planetesimal Gravitational Scattering
The Astronomical Journal, 2003 29 pages, 1 figure, submitted to ...
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, 2023 Review chapter of the book "Planetary Systems Now", to be published by World ...
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Evidence for the Disruption of a Planetary System During the Formation of the Helix Nebula
The Astronomical Journal, 2022 The persistence of planetary systems after their host stars evolve into their post-main-sequence phase is poorly constrained by observations. Many young white dwarf systems exhibit infrared excess emission and/or spectral absorption lines associated with
Jonathan P. Marshall +7 more
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Formation of Asteroid (16) Psyche by a Giant Impact
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni +14 more
wiley +1 more source
High-resolution Study of Planetesimal Formation by Gravitational Collapse of Pebble Clouds
The Astrophysical Journal, 2023 Planetary embryos are built through the collisional growth of 10–100 km-sized objects called planetesimals, a formerly large population of objects, of which asteroids, comets, and Kuiper Belt objects represent the leftovers from planet formation in our ...
Brooke Polak, Hubert Klahr
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Nondestructive analysis of Bennu samples toward comparative studies with Ryugu samples
Meteoritics &Planetary Science, Volume 61, Issue 1, Page 3-16, January 2026.Abstract Analyzing primitive extraterrestrial samples from asteroids is key to understanding the evolution of the early solar system. The OSIRIS‐REx mission returned samples from the B‐type asteroid Bennu, providing a valuable opportunity to compare them with the Ryugu samples collected by the Hayabusa2 mission.
Ryota Fukai +32 more
wiley +1 more source
Oligarchic Growth of Protoplanets in Planetesimal Rings
The Astrophysical JournalIn the standard planet formation scenario, planetesimals are assumed to form throughout the protoplanetary disk and to be smoothly distributed in the radial direction except for the snowline.
Yuki Kambara, Eiichiro Kokubo
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