Results 121 to 130 of about 16,853 (286)

The Meteoritical Society: Business from 2023 to 2024

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 680-696, March 2025.
Nancy L. Chabot, Jutta Zipfel, Tasha L. Dunn   +2 more
wiley   +1 more source

Magnetization of Iron Meteorites up to the Meter in Size as Possible Analogs for Asteroid Psyche

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Meteorite paleomagnetic studies indicate planetesimal generated magnetic fields, but spacecraft magnetic measurements have yet to identify asteroidal natural remanent magnetization (NRM). This apparent discrepancy is of particular interest in the context of the NASA Psyche mission, which will search for evidence of past magnetic activity of ...
Clara Maurel, Elise Clavé, Jérôme Gattacecca, Minoru Uehara, Elias N. Mansbach, Timothy J. McCoy, Benjamin P. Weiss   +6 more
wiley   +1 more source

Shock‐heated graphite in three IAB iron meteorites—Implications on the formation of diamond

Meteoritics &Planetary Science, Volume 60, Issue 4, Page 744-756, April 2025.
Abstract Iron meteorites, originating from the deepest parts of their parent bodies and separated during major break‐up events, surprisingly rarely contain diamonds despite experiencing similar pressure–temperature conditions as diamond‐bearing ureilites. In this study, graphite from three non‐magmatic IAB iron meteorites Canyon Diablo, Campo del Cielo,
Oliver Christ, Anna Barbaro, Ludovic Ferrière, Lidia Pittarello, M. Chiara Domeneghetti, Frank E. Brenker, Fabrizio Nestola, Matteo Alvaro   +7 more
wiley   +1 more source

On the growth of pebble-accreting planetesimals [PDF]

Astronomy & Astrophysics, 2016
Pebble accretion is a new mechanism to quickly grow the cores of planets. In pebble accretion, gravity and gas drag conspire to yield large collisional cross sections for small particles in protoplanetary disks. However, before pebble accretion commences, aerodynamical deflection may act to prevent planetesimals from becoming large, because particles ...
Visser, R.G., Ormel, C.W.
openaire   +6 more sources

Ceres: Organic‐Rich Sites of Exogenic Origin?

AGU Advances, Volume 6, Issue 1, February 2025.
Abstract Ceres, the largest object in the asteroid belt, is the only potential ocean world in the inner Solar System. Previous studies identified deposits of aliphatic organics in and around the Ernutet crater, and at small locations at Inamahari and Urvara craters. The origin of organics, either endogenic or exogenic, in these fresh exposures is still
R. Sarkar, A. Nathues, M. Hoffmann, E. Cloutis, K. Mengel, P. Singh, G. Thangjam, J. Hernandez, S. Karunatillake, M. Coutelier   +9 more
wiley   +1 more source

Search for pre‐accretionary irradiation effects in calcium‐aluminum inclusions from the CV3 chondrite Allende

Meteoritics &Planetary Science, Volume 60, Issue 2, Page 247-272, February 2025.
Abstract Calcium‐aluminum‐rich inclusions (CAIs) are the first objects that formed in the solar accretion disk and therefore provide valuable insights into the evolution of the early solar system. A long‐standing question regarding this earliest formative period relates to the storage of CAIs in the 1–4 Myr time period between their formation and later
P. Ghaznavi, C. Burkhardt, F. L. H. Tissot, I. Leya   +3 more
wiley   +1 more source

Extensive Pollution of Uranus and Neptune’s Atmospheres by Upsweep of Icy Material during the Nice Model Migration

The Astronomical Journal
In the Nice model of Solar System formation, Uranus and Neptune undergo an orbital upheaval, sweeping through a planetesimal disk. The region of the disk from which material is accreted by the ice giants during this phase of their evolution has not ...
Eva Zlimen, Elizabeth Bailey, Ruth Murray-Clay   +2 more
doaj   +1 more source

Shock Compression of Coesite up to 950 GPa

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
Abstract Experimental investigations of silica under high pressure and temperature offer crucial insights into modeling of Earth and super‐Earths’ interiors. Despite extensive studies on Hugoniots of silica polymorphs like fused‐silica (2.20 g/cm3), quartz (2.65 g/cm3) and stishovite (4.29 g/cm3) up to a terapascal, unexplored region of melting and ...
Xiaokang Feng, Kento Katagiri, Jia Qu, Keita Nonaka, Liang Sun, Pinwen Zhu, Norimasa Ozaki, Takayoshi Sano, Toshimori Sekine, Wenge Yang   +9 more
wiley   +1 more source

Planetesimal Formation in Magnetorotationally Dead Zones: Critical Dependence on the Net Vertical Magnetic Flux

, 2012
Turbulence driven by magnetorotational instability (MRI) affects planetesimal formation by inducing diffusion and collisional fragmentation of dust particles.
Bai, Bai, Bai, Bai, Chiang, Ciesla, Cuzzi, Hirose, Ida, Igea, Lubow, Machida, Okuzumi, Okuzumi, Okuzumi, Rothstein, Sano, Sano, Suzuki, Takeuchi, Turner, Turner, Turner, Umebayashi, Wada, Weidenschilling, Weidenschilling, Youdin   +27 more
core   +1 more source

Evidence for Magnetically‐Driven Accretion in the Distal Solar System

AGU Advances, Volume 5, Issue 6, December 2024.
Abstract Paleomagnetic measurements of meteorites indicate that magnetic fields existed in the inner solar nebula capable of driving accretion at rates similar to those observed for young stellar objects with protoplanetary disks. However, the field strength in the solar system beyond ∼7 astronomical units (AU) and its role in accretion remain poorly ...
Elias N. Mansbach, Benjamin P. Weiss, Eduardo A. Lima, Michael Sowell, Joseph L. Kirschvink, Roger R. Fu, Saverio Cambioni, Xue‐Ning Bai, Jodie B. Ream, Chisato Anai, Atsuko Kobayashi, Hironori Hidaka   +11 more
wiley   +1 more source