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CHO-bearing organic compounds at the surface of 67P/Churyumov-Gerasimenko revealed by Ptolemy

Wright, I. P.; Sheridan, S.; Barber, S. J.; Morgan, G. H.; Andrews, D. J. and Morse, A. D. (2015). CHO-bearing organic compounds at the surface of 67P/Churyumov-Gerasimenko revealed by Ptolemy. Science, 349(6247)

DOI (Digital Object Identifier) Link: https://doi.org/10.1126/science.aab0673
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Abstract

The surface and subsurface of comets preserve material from the formation of the solar system. The properties of cometary material thus provide insight into the physical and chemical conditions during their formation. We present mass spectra taken by the Ptolemy instrument 20 minutes after the initial touchdown of the Philae lander on the surface of comet 67P/Churyumov-Gerasimenko. Regular mass distributions indicate the presence of a sequence of compounds with additional -CH2- and -O- groups (mass/charge ratios 14 and 16, respectively). Similarities with the detected coma species of comet Halley suggest the presence of a radiation-induced polymer at the surface. Ptolemy measurements also indicate an apparent absence of aromatic compounds such as benzene, a lack of sulfur-bearing species, and very low concentrations of nitrogenous material.

Item Type: Journal Item
Copyright Holders: 2015 American Association for the Advancement of Science
ISSN: 1095-9203
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetScience and Technology Facilities Council
Not SetNot SetUK Space Agency
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 44166
Depositing User: Simon Sheridan
Date Deposited: 28 Aug 2015 11:52
Last Modified: 07 Dec 2018 10:34
URI: http://oro.open.ac.uk/id/eprint/44166
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