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<div>Dear planet enthusiasts,</div>
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<div>We're excited to announce that the next Planetary Lunch Seminar on September 23rd will be given by <b>Julia Miller</b> (Brown University). Julia will be <b>presenting her work on understanding the how volatiles are preserved in small KBOs.</b></div>
<div>Her results suggest that even hyper volatiles can be preserved over the age of the solar systems in km-sized objects, which has implications for JWST and Rubin observations.</div>
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<div>Join us on <b>Tuesday 9/23 at 12:30 PM in 54-517 or on Zoom.</b> Lunch will be provided, and we encourage you to arrive a few minutes early to get food.</div>
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<div>Julia will be on campus for the day and is available to meet with folks. In addition to her research on volatile transport and loss in comets and KBOs, Julia also studies the relationship between interior and surface processes on icy worlds like Pluto
and Titan, and how clathrates and other volatile ices affect both subsurface heat transport and observed surface morphologies.</div>
<div><b>Sign up here to meet with Julia: </b>https://docs.google.com/spreadsheets/d/1ITs3VseoRBcW29BQs9GN69VQBRj8Cb7ff5x0G8QyZg8/edit?usp=sharing</div>
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<div>Cheers, </div>
<div>The PLS Organizing Committee</div>
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<div>Title: <b>Volatile Retention and Thermal Alteration in Small Kuiper Belt Objects</b></div>
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<div>Small, ice-rich objects in and beyond the Kuiper Belt are likely to have undergone the least amount of processing in the billions of years since their formation, and can be used to form a more complete picture of the conditions and materials present in
the early solar system. However, even these objects are unlikely to have remained entirely pristine. Since they would originally have contained substantial amounts of hypervolatile ice, even minor sources of heating may have resulted in significant thermal
alteration. To understand the extent to which the presence and quantity of volatile materials in a small body is indicative of when and where an object formed, we have developed a new thermophysical evolution model for small bodies, which includes all physical
processes relevant to volatile loss at low temperatures. We find that it is possible for a km-size porous objects in the outer Kuiper Belt to retain CO over the lifetime of the solar system, but that the extent of alteration depends strongly on poorly-constrained
interior properties.</div>
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<div>Zoom link: https://mit.zoom.us/j/97275591700</div>
<div>PW: 54100</div>
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<div>To be added to the planetary email listserv, please contact planetary-org@mit.edu.</div>
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