Results 71 to 80 of about 1,926 (144)

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Effects of dust layers on thermal emission from airless bodies

Progress in Earth and Planetary Science, 2019
We have investigated the influence of thin thermally opaque dust layers on the thermal emission of rocks and regolith and determined the thermal response of these dust-covered surfaces to diurnal insolation cycles.
Jens Biele, Ekkehard Kührt, Hiroki Senshu, Naoya Sakatani, Kazunori Ogawa, Maximilian Hamm, Matthias Grott, Tatsuaki Okada, Takehiko Arai   +8 more
doaj   +1 more source

The Magnetic Mineralogy of Carbonaceous Chondrites: A Microscopy and Machine Learning Study of Meteorite WIS 91600

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract A central challenge in the paleomagnetic study of meteorites is to characterize their diverse remanence carriers. Here, we develop a machine‐learning assisted workflow that combines multi‐scale (mm to nm) and multi‐dimensional (2D‐3D) microscopy to build a comprehensive picture of ferromagnetic mineralogy in the C2 ungrouped carbonaceous ...
Richard J. Harrison, Po‐Yen Tung, Thomas Ginnis, Farhang Nabiei, Ursula Shaw, Elias N. Mansbach, James Bryson   +6 more
wiley   +1 more source

Surface Geology and Evolution of Asteroid Ryugu: Insights From Hayabusa2 Global Mapping

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Rubble‐pile asteroids, characterized by loose aggregates of debris held together by gravity, represent both a significant planetary hazard and a key to understanding planetesimal formation. Geologic mapping of these bodies provides essential insights into their origins, evolution, and surface processes.
Lisa M. Vincent, Trishit Ruj, Goro Komatsu, Aditya Ray, Hiroshi Kikuchi, Ryodo Hemmi, Hideaki Miyamoto, Seiji Sugita, the Hayabusa2 ONC science team   +8 more
wiley   +1 more source

Three-dimensional textures of Ryugu samples and their implications for the evolution of aqueous alteration in the Ryugu parent body

, 2023
This is a dataset for a paper entitled "Three-dimensional textures of Ryugu samples and their implications for the evolution of aqueous alteration in the Ryugu parent body." which is going to submit to Geochimica et Cosmochimica Acta.THIS ...
Tsuchiyama, A (via Mendeley Data)
core   +1 more source

Gravity Survey in Cape Ryugu and Syowa Station, Antarctic

Antarctic Record, 1980
Gravity survey was carried out in Cape Ryugu, and East and West Ongul Islands by the summer party of the 19th Japanese Antarctic Research Expedition (JARE-19) using a LaCoste and Romberg model G land gravity meter.
Katsutada Kaminuma, Toshio Kunimi, Shigeru Ohtaki   +2 more
doaj   +1 more source

Ryugu as seen close up by MASCOT [PDF]

, 2019
In October 2018, MASCOT landed on the surface of Ryugu to start a campaign of in-situ measurements. Its brief mission was successful, with the onboard camera revealing the surface of this C-type asteroid in unpre- cedented detail.
Sugita, Seiji, Stephan, Katrin, Roatsch, Thomas, Schmitz, Nicole, Elgner, Stephan, Preusker, Frank, Trauthan, Frank, Koncz, Alexander, Krohn, Katrin, Matz, K.-D., Vincent, Jean-Baptiste, Wagner, Roland, Jaumann, Ralf, Neumann, Wladimir, Mottola, Stefano, Schröder, Stefan, Parekh, Rutu, Michaelis, Harald, Otto, Katharina A.   +18 more
core  

The spatial distribution of impact craters on Ryugu

, 2019
Asteroid 162173 Ryugu has numerous craters. The initial measurement of impact craters on Ryugu, by Sugita et al. (2019), is based on Hayabusa2 ONC images obtained during the first month after the arrival of Hayabusa2 in June 2018.
Sugita, Seiji, Saiki, Takanao, Nakazawa, Satoru, Yoshioka, Kazuo, Iijima, Yu-ichi, Sawada, Hirotaka, Takeuchi, Hiroshi, Cho, Yuichiro, Takei, Yuto, Fujii, Atsushi, Shirai, Kei, Honda, Rie, Hirata, Naoyuki, Matsuoka, Moe, Tsuda, Yuichi, Noguchi, Rina, Yokota, Yasuhiro, Shimaki, Yuri, Ogawa, Kazunori, Yoshikawa, Kent, Tanaka, Satoshi, Yamada, Mamabu, Suzuki, Hidehiko, Kanamaru, Masanori, Kameda, Shingo, Ogawa, Naoko, Okada, Tatsuaki, Terui, Fuyuto, Hayakawa, Masahiko, Kikuchi, Shota, Watanabe, Sei-ichiro, Hirata, Naru, Kouyama, Toru, Tatsumi, Eri, Yamada, Manabu, Morota, Tomokatsu, Takahashi, Tadateru, Yamamoto, Yukio, Sakatani, Naoya, Honda, Chikatoshi, Mimasu, Yuya, Yamaguchi, Tomohiro, Yoshikawa, Makoto, Ono, Go   +43 more
core   +1 more source

Low thermal conductivity boulder with high porosity identified on C-type asteroid (162173) Ryugu [PDF]

, 2019
C-type asteroids are among the most pristine objects in the Solar System, but little is known about their interior structure and surface properties. Telescopic thermal infrared observations have so far been interpreted in terms of a regolith-covered ...
Otto, Katharina, Hamm, Maximilian, Grott, Matthias, Okada, Tatsuaki, Senshu, Hiroki, Delbo, Marco, Biele, Jens, Ogawa, Kazunori, Jaumann, Ralf, Kührt, Ekkehard, Knollenberg, Joerg, Michel, Patrick, Neumann, Wladimir, Knapmeyer, Martin, Hagermann, Axel   +14 more
core   +1 more source