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)
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
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Carbon-isotope Fractionation; Compound-specific Carbon; Organic-compounds; Parent-body; Gas-phase; Hydrogen; Chondrites; Pathways; Cm; Nucleosynthesis
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2023
Prepublished im Jahr
0
HGF-Berichtsjahr
2023
ISSN (print) / ISBN
0036-8075
e-ISSN
1095-9203
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 382,
Heft: 6677,
Seiten: 1411-1416
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
American Association for the Advancement of Science (AAAS)
Verlagsort
1200 New York Ave, Nw, Washington, Dc 20005 Usa
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
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Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30202 - Environmental Health
Forschungsfeld(er)
Environmental Sciences
PSP-Element(e)
G-504800-001
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
Copyright
Erfassungsdatum
2024-01-09