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D/H Ratios on Saturn and Jupiter from Cassini CIRS

Abstract:

We present new measurements of the deuterium abundance on Jupiter and Saturn, showing evidence that Saturn's atmosphere contains less deuterium than Jupiter's. We analyzed far-infrared spectra from the Cassini Composite Infrared Spectrometer to measure the abundance of HD on both giant planets. Our estimate of the Jovian D/H = (2.95 ± 0.55) × 10−5 is in agreement with previous measurements by ISO/SWS: (2.25 ± 0.35) × 10−5<...>

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.3847/1538-3881/aa899d

Authors


Pierel, JDR More by this author
Lellouch, E More by this author
Fletcher, LN More by this author
Bjoraker, GL More by this author
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Publisher:
IOP Publishing Publisher's website
Journal:
Astronomical Journal Journal website
Volume:
154
Issue:
5
Pages:
178
Publication date:
2017-10-05
Acceptance date:
2017-08-29
DOI:
EISSN:
1538-3881
ISSN:
0004-6256
Pubs id:
pubs:738660
URN:
uri:249fda81-afc1-44ec-8860-0008fe39ed6d
UUID:
uuid:249fda81-afc1-44ec-8860-0008fe39ed6d
Local pid:
pubs:738660

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