66 citations · 112 across the 11 of their papers we have counts for
13 papers
The Neptunian Final Parsec Problem: How Inertial Waves Enable Neptunes and Gas Giants to Survive Tidal Migration
Tim Hallatt, Adrian J. Barker, Sarah C. Millholland
Observations indicate that some hot Neptunes and Jupiters underwent high eccentricity migration (HEM). A longstanding issue facing HEM theory remains, however: in order to shrink t…
Coupled Orbital and Interior Evolution of Sub-Neptunes
Ritika Sethi, Sarah Millholland, Tim Hallatt
Recent observations have yielded the first measurements of young exoplanet demographics. Close-in sub-Neptune occurrence rates appear to rise from young ( Myr) to intermedi…
Shaving the Outskirts of Planetary Systems Probed by Roman via Stellar Flybys
Donald Liveoak, Tim Hallatt, Sarah Millholland
The recently launched Nancy Grace Roman Space Telescope (\textit{Roman}) will soon begin observations that promise to revolutionize our understanding of exoplanet demographics. \te…
Revealing the Origin of Desert Dwellers via Stellar Obliquities
Tim Hallatt, James E. Owen, Sarah Millholland
Observations suggest that the hot Neptune desert contains the remnants of destroyed gas giants. Recent theoretical work has shown that gas giant destruction via Roche lobe overflow…
Uncovering the Rapidly Evolving Orbits of the Dynamic TOI-201 System
Ismael Mireles, Solène Ulmer-Moll, Donald Liveoak +47
Studying planetary interactions in exoplanet systems informs theories of planet formation and evolution, providing essential context for understanding our own solar system. We comb…
Stability of Multiplanet Systems Through Hot Jupiter Destruction
Donald Liveoak, Tim Hallatt, Sarah Millholland
Recent observational and theoretical work suggests that the sub-Jovian desert (periods days, masses ) hosts the remains of destroyed hot…
Coupled Planetary Interior and Tidal Evolution
Tim Hallatt, Sarah Millholland
We present a new planetary structure/thermal evolution model, designed for use in problems that couple orbital dynamics with planetary structure. We first benchmark our structural/…
Shedding Light on Desert Dwellers
Tim Hallatt, Sarah Millholland
The ``sub-Jovian desert" (, periods 3 days) is sparsely populated but no longer empty. Recent surveys have revealed that pl…
On the Formation of Planets in the Milky Way's Thick Disk
Tim Hallatt, Eve J. Lee
Exoplanet demographic surveys have revealed that close-in (1 au) small planets orbiting stars in the Milky Way's thick disk are less abundant than those or…
New Mass and Radius Constraints on the LHS 1140 Planets -- LHS 1140 b is Either a Temperate Mini-Neptune or a Water World
Charles Cadieux, Mykhaylo Plotnykov, René Doyon +43
The two-planet transiting system LHS 1140 has been extensively observed since its discovery in 2017, notably with , HST, TESS, and ESPRESSO, placing strong constraints on…
Sculpting the sub-Saturn Occurrence Rate via Atmospheric Mass Loss
Tim Hallatt, Eve J. Lee
The sub-Saturn (4--8) occurrence rate rises with orbital period out to at least 300 days. In this work we adopt and test the hypothesis that the decrease in…
Can Large-Scale Migration Explain the Giant Planet Occurrence Rate?
Tim Hallatt, Eve J Lee
The giant planet occurrence rate rises with orbital period out to at least 300 days. Large-scale planetary migration through the disk has long been suspected to be the physic…
The Dynamics of Interstellar Asteroids and Comets within the Galaxy: an Assessment of Local Candidate Source Regions for 1I/`Oumuamua and 2I/Borisov
Tim Hallatt, Paul Wiegert
The low velocity of interstellar asteroid 1I/'Oumuamua with respect to our galaxy's Local Standard of Rest implies it is young. Adopting the young age hypothesis, we assess possibl…