The presence of clathrates in comet 67P/Churyumov-Gerasimenko

Luspay-Kuti, A.; Mousis, O.; Haessig, M.; Fuselier, S. A.; Lunine, J. I.; Marty, B.; Mandt, K. E.; Wurz, Peter; Rubin, Martin (2016). The presence of clathrates in comet 67P/Churyumov-Gerasimenko. Science Advances, 2(4), e1501781-e1501781. American Association for the Advancement of Science 10.1126/sciadv.1501781

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Cometary nuclei are considered to most closely reflect the composition of the building blocks of our solar system. As such, comets carry important information about the prevalent conditions in the solar nebula before and after planet formation. Recent measurements of the time variation of major and minor volatile species in the coma of the Jupiter family comet 67P/Churyumov-Gerasimenko (67P) by the ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) instrument onboard Rosetta provide insight into the possible origin of this comet. The observed outgassing pattern indicates that the nucleus of 67P contains crystalline ice, clathrates, and other ices. The observed outgassing is not consistent with gas release from an amorphous ice phase with trapped volatile gases. If the building blocks of 67P were formed from crystalline ices and clathrates, then 67P would have agglomerated from ices that were condensed and altered in the protosolar nebula closer to the Sun instead of more pristine ICEs originating from the interstellar medium or the outskirts of the disc, where amorphous ice may dominate

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences

UniBE Contributor:

Wurz, Peter and Rubin, Martin

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

2375-2548

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Katharina Weyeneth-Moser

Date Deposited:

11 Nov 2016 17:14

Last Modified:

11 Nov 2016 17:14

Publisher DOI:

10.1126/sciadv.1501781

BORIS DOI:

10.7892/boris.89505

URI:

https://boris.unibe.ch/id/eprint/89505

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