Far-ultraviolet spectroscopy from inside the coma of comet 67P/Churyumov-Gerasimenko with Alice on Rosetta

P. D. Feldman 1 Michael F. A'Hearn 2 Jean-Loup Bertaux 3 L. M. Feaga 2 J. Wm. Parker 4 E. Schindhelm 5 A. J. Steffl 5 S. A. Stern 5 H. A. Weaver 6
1 JHU - Johns Hopkins University
2 Department of Astronomy [College Park]
3 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
4 Smithsonian Environmental Research Center
5 Department of Space Studies [Boulder]
6 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
Abstract : We present observations of the coma of comet 67P/Churyumov-Gerasimenko made by the Alice far- ultraviolet spectrograph on Rosetta between January and mid-April 2015. Atomic emissions of hydrogen, oxygen, and carbon are interpreted in terms of disso- ciative electron excitation of H2O, CO2, CO, and O2, whose relative abundances can be derived from the spectra and which are found to be both spatially and temporally variable.
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Conference papers
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https://hal-insu.archives-ouvertes.fr/insu-01213925
Contributor : Catherine Cardon <>
Submitted on : Friday, October 9, 2015 - 1:29:26 PM
Last modification on : Friday, January 10, 2020 - 3:42:29 PM

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  • HAL Id : insu-01213925, version 1

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P. D. Feldman, Michael F. A'Hearn, Jean-Loup Bertaux, L. M. Feaga, J. Wm. Parker, et al.. Far-ultraviolet spectroscopy from inside the coma of comet 67P/Churyumov-Gerasimenko with Alice on Rosetta. European Planetary Science Congress 2015, Sep 2015, Nantes, France. pp.EPSC2015-727. ⟨insu-01213925⟩

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