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Seasonal exposure of carbon dioxide ice on the nucleus of comet 67P/Churyumov-Gerasimenko.

Abstract:

Carbon dioxide is one of the most abundant species in cometary nuclei, but due to its high volatility CO2 ice is generally only found beneath the surface. We report the infrared spectroscopic identification of a CO2 ice-rich surface area, located in the Anhur region of comet 67P/Churyumov-Gerasimenko. Spectral modeling shows that about 0.1% of the 80×60 m area is CO2 ice. This exposed ice was observed a short time after exiting from local winter; following the i...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1126/science.aag3161

Authors


Filacchione, G More by this author
Capaccioni, F More by this author
Ciarniello, M More by this author
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Italian Space Agency More from this funder
Centre National d'Etudes Spatiales More from this funder
Deutsches Zentrum für Luft- und Raumfahrt More from this funder
National Aeronautic and Space Administration More from this funder
Publisher:
American Association for the Advancement of Science Publisher's website
Journal:
Science Journal website
Volume:
354
Issue:
6319
Pages:
1563-1566
Publication date:
2016-12-05
Acceptance date:
2016-10-28
DOI:
ISSN:
0036-8075 and 1095-9203
Pubs id:
pubs:664081
URN:
uri:9d414514-16cc-47ad-8d47-f50b9cff5208
UUID:
uuid:9d414514-16cc-47ad-8d47-f50b9cff5208
Local pid:
pubs:664081
Language:
English
Keywords:

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