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Zeichner, S.S.* ; Aponte, J.C.* ; Bhattacharjee, S.* ; Dong, G.* ; Hofmann, A.E.* ; Dworkin, J.P.* ; Glavin, D.P.* ; Elsila, J.E.* ; Graham, H.V.* ; Naraoka, H.* ; Takano, Y.* ; Tachibana, S.* ; Karp, A.T.* ; Grice, K.* ; Holman, A.I.* ; Freeman, K.H.* ; Yurimoto, H.* ; Nakamura, T.* ; Noguchi, T.* ; Okazaki, R.* ; Yabuta, H.* ; Sakamoto, K.* ; Yada, T.* ; Nishimura, M.* ; Nakato, A.* ; Miyazaki, A.* ; Yogata, K.* ; Abe, M.* ; Okada, T.* ; Usui, T.* ; Yoshikawa, M.* ; Saiki, T.* ; Tanaka, S.* ; Terui, F.* ; Nakazawa, S.* ; Watanabe, S.i.* ; Tsuda, Y.* ; Hamase, K.* ; Fukushima, K.* ; Aoki, D.* ; Hashiguchi, M.* ; Mita, H.* ; Chikaraishi, Y.* ; Ohkouchi, N.* ; Ogawa, N.O.* ; Sakai, S.* ; Parker, E.T.* ; Mclain, H.L.* ; Orthous-Daunay, F.R.* ; Vuitton, V.* ; Wolters, C.* ; Schmitt-Kopplin, P. ; Hertkorn, N. ; Thissen, R.* ; Ruf, A.* ; Isa, J.* ; Oba, Y.* ; Koga, T.* ; Yoshimura, T.* ; Araoka, D.* ; Sugahara, H.* ; Furusho, A.* ; Furukawa, Y.* ; Aoki, J.* ; Kano, K.* ; Nomura, S.M.* ; Sasaki, K.* ; Sato, H.* ; Yoshikawa, T.* ; Morita, M.* ; Onose, M.* ; Kabashima, F.* ; Fujishima, K.* ; Yamazaki, T.* ; Kimura, Y.* ; Eiler, J.M.*

Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium.

Science 382, 1411-1416 (2023)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Polycyclic aromatic hydrocarbons (PAHs) contain ≲20% of the carbon in the interstellar medium. They are potentially produced in circumstellar environments (at temperatures ≳1000 kelvin), by (~10 kelvin) interstellar clouds, or by processing of carbon-rich dust grains. We report isotopic properties of PAHs extracted from samples of the asteroid Ryugu and the meteorite Murchison. The doubly-13C substituted compositions (Δ2×13C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51‰ higher than values expected for a stochastic distribution of isotopes. The Δ2×13C values are higher than expected if the PAHs formed in a circumstellar environment, but consistent with formation in the interstellar medium. By contrast, the PAHs phenanthrene and anthracene in Ryugu samples have Δ2×13C values consistent with formation by higher-temperature reactions.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Carbon-isotope Fractionation; Compound-specific Carbon; Organic-compounds; Parent-body; Gas-phase; Hydrogen; Chondrites; Pathways; Cm; Nucleosynthesis
ISSN (print) / ISBN 0036-8075
e-ISSN 1095-9203
Zeitschrift Science
Quellenangaben Band: 382, Heft: 6677, Seiten: 1411-1416 Artikelnummer: , Supplement: ,
Verlag American Association for the Advancement of Science (AAAS)
Verlagsort 1200 New York Ave, Nw, Washington, Dc 20005 Usa
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Analytical BioGeoChemistry (BGC)
Förderungen ARC Laureate fellowship
Australian Research Council through a Discovery Outstanding Research Award
Japan Society for the Promotion of Science
NASA Consortium for Hayabusa2 Analysis of Organic Solubles
US Department of Energy BES Grant
Simons Foundation
NASA Emerging Worlds Grant
NSF Graduate Research Fellowship