Results 81 to 90 of about 11,561 (252)

Core Formation in Giant Gaseous Protoplanets

, 2008
Sedimentation rates of silicate grains in gas giant protoplanets formed by disk instability are calculated for protoplanetary masses between 1 M_Saturn to 10 M_Jupiter.
Ackerman, Alexander, Bodenheimer, Boss, Boss, Boss, DeCampli, Dominik, Gerald Schubert, Guillot, Helled, Helled, Helling, Hubickyj, Lissauer, Markiewicz, Mayer, Mayer, Mayer, Papaloizou, Podolak, Podolak, Pollack, Pollack, Rafikov, Ravit Helled, Saumon, Saumon, Volk, Weidenschilling, Wetherill, Woitke   +31 more
core   +1 more source

PLANETARY MIGRATION IN EVOLVING PLANETESIMAL DISKS [PDF]

International Journal of Modern Physics D, 2003
In the current paper, we further improved the model for the migration of planets introduced and extended to time-dependent planetesimal accretion disks by Del Popolo. In the current study, the assumption of Del Popolo, that the surface density in planetesimals is proportional to that of gas, is relaxed. In order to obtain the evolution of planetesimal
Yesilyurt, IS, Ercan, EN, Del Popolo, A
openaire   +4 more sources

Characteristics of Natural Remanence Records in Fine‐Grained Particles Returned From Asteroid Ryugu

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Particles collected from the asteroid Ryugu by the Hayabusa2 spacecraft offer a unique opportunity to investigate the magnetic record of the primitive solar system, as any terrestrial magnetic contamination is minimal and can be accounted for.
Masahiko Sato, Yuki Kimura, Tadahiro Hatakeyama, Tomoki Nakamura, Satoshi Okuzumi, Sei‐ichiro Watanabe, Seiji Sugita, Satoshi Tanaka, Shogo Tachibana, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Fuyuto Terui, Satoru Nakazawa, Yuichi Tsuda   +27 more
wiley   +1 more source

Dust Clumping in Outer Protoplanetary Disks: The Interplay among Four Instabilities

The Astrophysical Journal Letters
Dust concentration in protoplanetary disks (PPDs) is the first step toward planetesimal formation, a crucial yet highly uncertain stage in planet formation.
Pinghui Huang, Xue-Ning Bai
doaj   +1 more source

Overcoming migration during giant planet formation

, 2007
In the core accretion model, gas giant formation is a race between growth and migration; for a core to become a jovian planet, it must accrete its envelope before it spirals into the host star.
Edward W. Thommes, Leif Nilsson, Lynden-Bell D., Norman Murray   +3 more
core   +1 more source

Understanding Planetesimals

Eos, Transactions American Geophysical Union, 2014
Planetesimals represent turning points in planetary formation, when the materials required for building planets are first incorporated into bodies with radii from tens to hundreds of kilometers or larger, and are sometimes differentiated into metallic cores and silicate mantles. These early celestial bodies are the accretionary step between the dust of
openaire   +1 more source

Graphite crystallinity and thermal record in Campo del Cielo IAB iron meteorite: A window into impact processing on a chondritic body

Meteoritics &Planetary Science, Volume 61, Issue 2, Page 300-316, February 2026.
Abstract The Campo del Cielo iron meteorite (IAB‐MG) provides a unique window into early solar system processes, particularly the formation and evolution of carbon phases in non‐magmatic iron meteorites. In this study, we conducted a systematic nanostructural investigation of three distinct graphite occurrences—cliftonite (type I), interstitial ...
Xiao Tian Deng, Hong Yi Chen, Yang Li, Jin Yu Zhang, Lan Fang Xie, Si Zhe Zhao, Zhuang Guo, Chen Li, Kai Rui Tai   +8 more
wiley   +1 more source

Planetesimal Accretion in Binary Systems: Role of the Companion's Orbital Inclination

, 2009
Recent observations show that planet can reside in close binary systems with stellar separation of only about 20 AU. However, planet formation in such close binary systems is a challenge to current theory.
Armitage, Duchêne, Duquennoy, Hatzes, Heppenheimer, Ji-Lin Zhou, Ji-Wei Xie, Kley, Kokubo, Levison, Marzari, Mathieu, Matsuyama, Papaloizou, Pascucci, Queloz, Quintana, Quintana, Quintana, Rafikov, Rafikov, Takeuchi, Weidenschilling, Xie   +23 more
core   +1 more source

Collision rates of planetesimals near mean-motion resonances [PDF]

, 2021
S. Wallace, Thomas Quinn, Aaron C. Boley
openalex   +1 more source

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, Benjamin P. Weiss, Namya Baijal, Robert Melikyan, Erik Asphaug, John B. Biersteker, Richard P. Binzel, William F. Bottke, Samuel W. Courville, Linda T. Elkins‐Tanton, David J. Lawrence, José M. G. Merayo, Carol A. Raymond, Mark A. Wieczorek, Maria T. Zuber   +14 more
wiley   +1 more source