Results 61 to 70 of about 441 (171)

Over the possible role of metal atom clusters in cosmochemistry and in the origin of life

Revista de Química, 1992
We present here the hypothesis of a possible relationship between metal atom clusters and the formation of organic molecules in the interstellar medium and on small bodies as a possible pathway to the origin of such molecules.
Silvio Dioses Castro, Richard Korswagen
doaj  

Oxygen Isotope Exchange between Dust Aggregates and Ambient Nebular Gas

The Astrophysical Journal
Meteorites and their components exhibit a diverse range of oxygen isotope compositions, and the isotopic exchange timescale between dust grains and ambient gas is a key parameter for understanding the spatiotemporal evolution of the solar nebula. As dust
Sota Arakawa, Daiki Yamamoto, Lily Ishizaki, Tamami Okamoto, Noriyuki Kawasaki   +4 more
doaj   +1 more source

Snapshots of an Evolving Solar Nebula Recorded in Nucleosynthetic Sr and Ba Signatures of Early Condensates

The Astrophysical Journal Letters
The discovery of extreme strontium isotope anomalies ( μ ^84 Sr) in refractory leachates from Allende fine-grained calcium-aluminum-rich inclusions (CAIs) is at odds with long-standing predictions regarding the homogenization of presolar components in ...
R. T. C. Marquez, B. L. A. Charlier, F. L. H. Tissot   +2 more
doaj   +1 more source

Revisiting a Chemical Route to the Formation of CN− in the Interstellar Medium

The Astrophysical Journal
We discuss the HCN + H ^− reaction as a path to the formation of CN ^− , the smallest cyanopolyyne anion observed in several interstellar environments.
Pablo del Mazo-Sevillano, Manuel Lara, E. Yurtsever, Mauro Satta, R. Wester, F. A. Gianturco   +5 more
doaj   +1 more source

Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material

The Astrophysical Journal
The analysis of samples returned from the C-type asteroid Ryugu has drastically advanced our knowledge of the evolution of early solar system materials.
Ryoji Tanaka, Dilan M. Ratnayake, Tsutomu Ota, Noah Miklusicak, Tak Kunihiro, Christian Potiszil, Chie Sakaguchi, Katsura Kobayashi, Hiroshi Kitagawa, Masahiro Yamanaka, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Tomohiro Usui, Sei-ichiro Watanabe, Toru Yada, Kasumi Yogata, Makoto Yoshikawa, Eizo Nakamura   +25 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Contents

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 2-29, August 2025.
wiley   +1 more source

Automated identification of soil functional components based on NanoSIMS data

Ecological Informatics
NanoSIMS technique allows to investigate the micro-spatial organization in complex structures in multiple scientific fields such as material science, cosmochemistry, and biogeochemistry. In soil biogeochemistry applications, NanoSIMS-based approaches aim
Yahan Hu, Johann Maximilian Zollner, Carmen Höschen, Martin Werner, Steffen A. Schweizer   +4 more
doaj   +1 more source

Compositions of carbonaceous-type asteroidal cores in the early solar system. [PDF]

Sci Adv, 2022
Zhang B, Chabot NL, Rubin AE.
europepmc   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

The stellar Mg/Si, C/O, Ca/Si, Al/Si, Na/Si, and Fe/Si ratios and the mineral diversity of rocky exoplanets

Open Astronomy
The bulk planetary compositions are thought to be consistent with the chemical abundances of their host stars. The abundances of eight key rock-forming elements and the key planetary abundance ratios in G- and F-type main sequence stars located in the ...
Futó Péter, Gucsik Arnold
doaj   +1 more source