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The detection of solid phosphorus and fluorine in the dust from the coma of comet 67P/Churyumov–Gerasimenko

Abstract : Here, we report the detection of phosphorus and fluorine in solid particles collected from the inner coma of comet 67P/Churyumov-Gerasimenko measured with the COmetary Secondary Ion Mass Analyser (COSIMA) instrument on-board the Rosetta spacecraft, only a few kilometers away from the comet nucleus. We have detected phosphorus-containing minerals from the presented COSIMA mass spectra, and can rule out e.g. apatite minerals as the source of phosphorus. This result completes the detection of life-necessary CHNOPS-elements in solid cometary matter, indicating cometary delivery as a potential source of these elements to the young Earth. Fluorine was also detected with CF + secondary ions originating from the cometary dust.
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Submitted on : Friday, November 27, 2020 - 2:28:57 PM
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Esko Gardner, Harry J Lehto, Kirsi Lehto, Nicolas Fray, Anaïs Bardyn, et al.. The detection of solid phosphorus and fluorine in the dust from the coma of comet 67P/Churyumov–Gerasimenko. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2020, 499 (2), pp.1870-1873. ⟨10.1093/mnras/staa2950⟩. ⟨insu-03028160⟩



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