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Observations of Cometary Organics: A Post Rosetta Review

Morse, Andrew D. and Chan, Queenie H. S. (2019). Observations of Cometary Organics: A Post Rosetta Review. ACS Earth and Space Chemistry, 3(9) pp. 1773–1791.

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Comets are relics from the formation of the solar system. During their formation, the comets captured organics in their vicinity that may have originated in interstellar space and survived the collapse of the solar system’s parent molecular cloud. The variety of organic compounds depends on the initial ingredients and formation conditions, subsequently modified through chemical processes in the solar nebula and on the comet. As a result, organic compounds record the history of their journey from interstellar space, through comets and perhaps onward to Earth. However, because of the fragile nature of comets, the pristine organics stored on the nucleus of a comet is difficult to detect directly. The composition of cometary organics has been gleaned from a variety of sources, remote sensing detection of volatiles in the coma of many comets, in situ spacecraft missions of a few targeted comets, and terrestrial analysis of refractory organics in potential cometary dust arriving on Earth. The spacecraft missions provide the link between the remote sensing and terrestrial analysis. We review these observations in light of the recent completion of the Rosetta mission, with its lander Philae and long-term monitoring of 67P/Churyumov-Gerasimenko, which has greatly expanded our knowledge of cometary organics.

Item Type: Journal Item
Copyright Holders: 2019 American Chemical Society
ISSN: 2472-3452
Project Funding Details:
Funded Project NameProject IDFunding Body
Astronomy and Planetary Sciences at the Open UniversityST/L000776/1STFC (Science & Technology Facilities Council)
Consolidated Grant - Solar Studies and Planetary Studies (SS & PL 2016)ST/P000657/1STFC (Science & Technology Facilities Council)
Keywords: comets; organics; Rosetta; stardust; solar nebula; interplanetary dust particles;
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 66241
SWORD Depositor: Jisc Publications-Router
Depositing User: Jisc Publications-Router
Date Deposited: 21 Aug 2019 09:08
Last Modified: 30 Oct 2019 06:03
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