Association of volatile species to the main ices in comet 67P/Churyumov-Gerasimenko
- 1University of Bern, Physics Institute, Space Research & Planetary Sciences, Bern, Switzerland (martin.rubin@unibe.ch)
- 2LATMOS/IPSL-CNRS-UPMC-UVSQ, 4 Avenue de Neptune, F-94100, Saint-Maur, France
- 3Department of Climate, Space Sciences, and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, USA
- 4Belgian Institute for Space Aeronomy, BIRA-IASB, Ringlaan 3, B-1180 Brussels, Belgium
- 5Space Science Directorate, Southwest Research Institute, 6220 Culebra Rd., San Antonio, TX 78228, USA
- 6Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX 78249, USA
- 7Science Division, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- 8NCCR PlanetS, Gesellschaftsstrasse 6, 3012 Bern, Switzerland
- 9Center for Space and Habitability, University of Bern, Gesellschaftsstrasse 6, CH-3012 Bern, Switzerland
ESA’s Rosetta mission accompanied comet 67P/Churyumov-Gerasimenko (67P) for over two years between 2014 – 2016. On board was ROSINA, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (Balsiger et al. 2007), which measured, in situ, the composition of the gaseous coma.
The set of molecules monitored included highly volatile species, such as carbon monoxide and methane, together with the main coma gases, water and carbon dioxide. In our recent work (Rubin et al., 2023), we have shown that the local coma abundances of highly volatile species can be reproduced by a linear combination of H2O and CO2, indicating that they are also associated in the ices of the comet’s nucleus.
In this presentation, we will report on these findings and further investigate correlations and variations between different volatile species.
References
Balsiger et al., ROSINA – Rosetta Orbiter Spectrometer for Ion and Neutral Analysis, SSR, 128(1), 745–801, 2007.
Rubin et al., Volatiles in the H2O and CO2 ices of comet 67P/Churyumov-Gerasimenko, MNRAS, 526, 3, 4209–4233, 2023.
How to cite: Rubin, M., Altwegg, K., Berthelier, J.-J., Bonny, R. F., Combi, M. R., De Keyser, J., Doriot, A. C., Fuselier, S. A., Gombosi, T. I., Gudipati, M. S., Hänni, N. P., Kipfer, K. A., Ligterink, N. F. W., Müller, D. R., Shou, Y., and Wampfler, S. F.: Association of volatile species to the main ices in comet 67P/Churyumov-Gerasimenko, Europlanet Science Congress 2024, Berlin, Germany, 8–13 Sep 2024, EPSC2024-121, https://doi.org/10.5194/epsc2024-121, 2024.
