5 papers
Atmospheric Escape Rates of Planets in Stellar Tidal Fields from 3-D Hydrodynamic Simulations
Ritika Sethi, Morgan MacLeod, Sarah Millholland
Thermally driven atmospheric escape, including photo-evaporation and core-powered mass-loss, plays a key role in shaping the evolution of close-in exoplanets, yet most current mode…
On the coincidence between the close passage of HD7977 and the Pliocene-Pleistocene transition
Zhuoya Cao, Abraham Loeb, Morgan MacLeod
The Oort Cloud's dynamical evolution is significantly influenced by both the galactic tide and stellar flybys. This study investigates the particular case of HD7977's close encount…
Probing the extent of WASP-52 b's atmosphere. High-resolution observations and 3D modeling insights
F. Nail, A. OklopÄiÄ, M. MacLeod +5
WASP-52 b is an inflated hot Jupiter with a large Roche lobe filling fraction, positioned in the hot Neptune desert. Previous in-transit observations of the helium triplet at 10833…
Tidal Amplitudes in the Magellanic Cloud Population of Heartbeat Stars
Morgan MacLeod, Abraham Loeb
Heartbeat (HB) stars exhibit pulses in their light curves once per orbit due to ellipsoidal distortions from strong tides at periapse. We analyze the population of HB stars in the…
Empirical Constraints on Tidal Dissipation in Exoplanet Host Stars
Sarah C. Millholland, Morgan MacLeod, Felicia Xiao
The orbits of short-period exoplanets are sculpted by tidal dissipation. However, the mechanisms and associated efficiencies of these tidal interactions are poorly constrained. We…