Results 91 to 100 of about 1,225 (202)

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

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

Astrogeology and Cosmochemistry of Our Solar System

This thesis aims to explore and guide us through a brief history of geology, over the years by mankind, and the steps it took to achieve astronomical documentation, that led it to reach new heights in space exploration, utilizing Astrogeology and ...
Nair , Vivek
core  

Nuclei in the Cosmos XV (NIC XV)

, 2019
These peer-reviewed NIC XV conference proceedings present the latest major advances in nuclear physics, astrophysics, astronomy, cosmochemistry and neutrino physics, which provide the necessary framework for a microscopic understanding of astrophysical ...
Junker, Matthias, Formicola, Alba, Gialanella, Lucio, Imbriani, Gianluca   +3 more
core   +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

The CAI Database: 26Al–26Mg Isotope Systematics

The Astrophysical Journal Supplement Series
We present a publicly available calcium–aluminum-rich inclusion (CAI) database that focuses on the initial ^26 Al/ ^27 Al _0 ratio in CAIs, designed in a way that researchers in cosmochemistry and astrophysics may find useful.
Emilie T. Dunham, Ming-Chang Liu, Aman Burman, Fatima Jorge-Chavez, Danielle Leuer, Ashley K. Herbst, François L. H. Tissot, Kevin D. McKeegan   +7 more
doaj   +1 more source

Exploring Organic-mineral Evolution in Planetary Analogs: Insights from Hydrothermal Alteration of Aromatic Molecules and Mafic Minerals

The Planetary Science Journal
Organic-mineral interactions are crucial drivers of diversity in abiotic systems on planetary surfaces. Despite their significance, the evolution of these systems, particularly the role of organic molecules in newly formed minerals, remains underexplored.
Vassilissa Vinogradoff, Vincent Chevrier, Olivier Grauby, Marie-Vanessa Coulet, Florence Chaspoul, John Carter   +5 more
doaj   +1 more source

Supplementary data for the Ph.D. thesis "Experimental study of the origin of mass-independent isotopic fractionations in cosmochemistry" for the plasma deposits (chapter VII)

The "Experiments data" file shows the different experimental conditions (duration, power, gas composition, polarization intensity and voltage, as well as the recuperation area data) for 155 microwave plasma experiments.
ASSET, Nathan
core   +1 more source