Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium
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 reactions within cold (~10 kelvin) interstellar clouds, or by processing of carbon-rich dust grains. We report...
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| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | http://hdl.handle.net/20.500.11937/96506 |
| _version_ | 1848766161117773824 |
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| author | 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, Kliti Holman, Alex 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.I.M. Sasaki, K. Sato, H. Yoshikawa, T. Tanaka, S. Morita, M. Onose, M. Kabashima, F. Fujishima, K. Yamazaki, T. Kimura, Y. Eiler, J.M. |
| author_facet | 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, Kliti Holman, Alex 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.I.M. Sasaki, K. Sato, H. Yoshikawa, T. Tanaka, S. Morita, M. Onose, M. Kabashima, F. Fujishima, K. Yamazaki, T. Kimura, Y. Eiler, J.M. |
| author_sort | Zeichner, S.S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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 reactions within cold (~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 (D2×13C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51% higher than values expected for a stochastic distribution of isotopes. The D2×13C 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 D2×13C values consistent with formation by higher-temperature reactions. |
| first_indexed | 2025-11-14T11:46:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-96506 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | eng |
| last_indexed | 2025-11-14T11:46:44Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-965062024-12-03T23:55:47Z Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium 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, Kliti Holman, Alex 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.I.M. Sasaki, K. Sato, H. Yoshikawa, T. Tanaka, S. Morita, M. Onose, M. Kabashima, F. Fujishima, K. Yamazaki, T. Kimura, Y. Eiler, J.M. 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 reactions within cold (~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 (D2×13C values) of the PAHs naphthalene, fluoranthene, and pyrene are 9 to 51% higher than values expected for a stochastic distribution of isotopes. The D2×13C 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 D2×13C values consistent with formation by higher-temperature reactions. 2023 Journal Article http://hdl.handle.net/20.500.11937/96506 10.1126/science.adg6304 eng unknown |
| spellingShingle | 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, Kliti Holman, Alex 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.I.M. Sasaki, K. Sato, H. Yoshikawa, T. Tanaka, S. 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 |
| title | Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium |
| title_full | Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium |
| title_fullStr | Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium |
| title_full_unstemmed | Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium |
| title_short | Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium |
| title_sort | polycyclic aromatic hydrocarbons in samples of ryugu formed in the interstellar medium |
| url | http://hdl.handle.net/20.500.11937/96506 |