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The origin of Titan's external oxygen: further constraints from ALMA upper limits on CS and CH2NH

Abstract:

Titan's atmospheric inventory of oxygen compounds (H2O, CO2, CO) are thought to result from photochemistry acting on externally supplied oxygen species (O+, OH, H2O). These species potentially originate from two main sources: (1) cryogenic plumes from the active moon Enceladus and (2) micrometeoroid ablation. Enceladus is already suspected to be the major O+ source, which is required for CO creation. However, photochemical models also require H2O and OH influx to reproduce observed quantities...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.3847/1538-3881/aac172

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atmos Ocean & Planet Physics
Oxford college:
St Anne's College
Role:
Author
ORCID:
0000-0002-6772-384X
More from this funder
Name:
National Aeronautics and Space Administration
Funding agency for:
Nixon, C
Charnley, S
Thelen, A
Grant:
NNX15AU59
More from this funder
Name:
Science and Technology Facilities Council
Funding agency for:
Teanby, N
Irwin, P
Sylvestre, M
Grant:
ST/N00082X/1
ST/N00082X/1
Publisher:
American Astronomical Society
Journal:
Astronomical Journal More from this journal
Volume:
155
Issue:
6
Article number:
251
Publication date:
2018-05-25
Acceptance date:
2018-04-27
DOI:
EISSN:
1538-3881
ISSN:
0004-6256
Pubs id:
pubs:848184
UUID:
uuid:0b08e12b-5c32-4c57-88cc-c771a2648204
Local pid:
pubs:848184
Source identifiers:
848184
Deposit date:
2018-05-19

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