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Dwarf Planets

Tuesday, March 12, 2024, 2:15 PM
Waterway Ballroom 6

Chairs:
Simon Porter
Emily Martin
Moderator:
Samuel Courville
2:15 PM
Session Introduction
2:20 PM
Le Becq N.* Conway S. J. Jabaud B. Tobie G. Artoni R.
A New Model of Crater Degradation on Ceres Involving Ice Sublimation [#1195]
Using Dawn data, we mapped talus units on Ceres. By investigating their distribution and morphology, we propose a new scenario of crater evolution involving the formation of talus deposits due to the sublimation of water ice contained in the crust.
2:30 PM
Strom C. A.* Fieber-Beyer S. K. Scully J. E. C.
Evaluation of Age and Rheology Differences as Causes of the Morphological Distinctiveness of Ahuna Mons [#1116]
Ahuna Mons is more distinctively cryovolcanic than other possible cryovolcanic structures on Ceres. We test the hypotheses that Ahuna Mons is unique either due to its young age or a more viscous rheology. Our results support the latter hypothesis.
2:40 PM
Nimmo F.* Brown M. E.
The Internal Structure of Eris Inferred from its Spin and Orbit Evolution [#1405]
Eris’s synchronous spin shows that it is unexpectedly dissipative. A differentiated Eris with a warm, convecting ice shell atop a rocky core can explain the observations, but an undifferentiated rock-ice mixture cannot.
2:50 PM
Nguyen A. L.* McGovern P. J.
The Role of Subsurface Ocean Freezing in the Stress State of Pluto's Ice Shell [#2543]
Numeric and analytical modeling of subsurface ocean freezing and its effects on Pluto’s shell around Sputnik Planitia basin. Bounds on freezing-induced shell thickening, applied stress due to freezing, and Pluto’s shell thickness are explored.
3:00 PM
Verbiscer A. J.* Porter S. B. Benecchi S. D. Kavelaars J. J. Fraser W. C. Peltier L. et al.
3:10 PM
Grundy W. M.* Raposa S. M. Engle A. E. Tan S. Lindberg G. E. Umurhan O. M. et al.
Pressure Outbursts from Cooling Volatile Liquid Mixtures [#2092]
Outbursts that occur on freezing certain liquid mixtures are demonstrated in the laboratory and potential planetary applications are considered for outer solar system icy bodies.
3:20 PM
Panel Q&A
3:45 PM
Session Closure

*presenter