saturnian system
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2021 ◽  
Author(s):  
Carmen Immerzeel ◽  
Stéphanie Cazaux ◽  
Nick Oberg

<p>Satellites are generally believed to form in circumplanetary disks (CPDs): a gas disk containing icy and rocky particles that accumulate to form massive moons over time. The discoveries by the Cassini-Huygens mission have led to a revision of the birth environment of the Saturnian system.</p> <p>We aim to constrain the formation circumstances of Titan's building blocks by considering the moon's observed characteristics. We use radiation thermo-chemical CPD models and evaluate them on their capacity to reproduce a Titan-like satellite.</p> <p>To form a moon with Titan's ice-to-rock ratio, we find that the dust-to-gas ratio in the CPD must be in the order of solar nebula values, O(10<sup>-2</sup>). The ice availability upon accretion is otherwise incompatible with Titan's moment of inertia. Our models predict a large NH<sub>3</sub> inventory was available upon Titan's formation, ∼10-20wt.% of the total ice. This is consistent with the hypothesis that the observed N<sub>2</sub> in Titan is captured as NH<sub>3</sub> and converted by photolysis and shock heating, and is compatible with the possible presence of a conductive layer at 45±15 km as revealed by the Huygens probe.</p>



Author(s):  
M. R. Kirchoff ◽  
E. B. Bierhaus ◽  
L. Dones ◽  
S. J. Robbins ◽  
K. N. Singer ◽  
...  
Keyword(s):  


2016 ◽  
Vol 50 (6) ◽  
pp. 402-407 ◽  
Author(s):  
T. P. Kiseleva ◽  
T. A. Vasil’eva ◽  
E. A. Roshchina ◽  
I. S. Izmailov


2013 ◽  
Vol 85 ◽  
pp. 164-174 ◽  
Author(s):  
W.-L. Tseng ◽  
R.E. Johnson ◽  
W.-H. Ip


2013 ◽  
Vol 118 (6) ◽  
pp. 3214-3222 ◽  
Author(s):  
L. C. Ray ◽  
M. Galand ◽  
P. A. Delamere ◽  
B. L. Fleshman


Nature ◽  
2012 ◽  
Author(s):  
Ron Cowen
Keyword(s):  


2012 ◽  
Vol 63-64 ◽  
pp. 133-138 ◽  
Author(s):  
Yasuhito Sekine ◽  
Hidenori Genda


2011 ◽  
Vol 69 (11-12) ◽  
pp. 1038-1049 ◽  
Author(s):  
Diane Craig Davis ◽  
Kathleen C. Howell


2010 ◽  
Vol 62 (4) ◽  
pp. L17-L21 ◽  
Author(s):  
Shigeru Takahashi ◽  
Shuji Deguchi ◽  
Nario Kuno ◽  
Tomomi Shimoikura ◽  
Fumi Yoshida


2010 ◽  
Vol 44 (1) ◽  
pp. 60-67 ◽  
Author(s):  
T. P. Kiseleva ◽  
I. S. Izmailov ◽  
O. A. Kalinichenko ◽  
T. A. Vasilieva


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