138 citations · 239 across the 7 of their papers we have counts for
7 papers
Noble Gas Planetology and the Xenon Clouds of Uranus
Kevin J Zahnle
Noble gases provide tracers of cosmic provenance that are accessible to a future Uranus Atmospheric Probe. Argon and krypton are expected to be well-mixed on Uranus with respect to…
JWST observations of K2-18b can be explained by a gas-rich mini-Neptune with no habitable surface
Nicholas F. Wogan, Natasha E. Batalha, Kevin Zahnle +3
JWST recently measured the transmission spectrum of K2-18b, a habitable-zone sub-Neptune exoplanet, detecting CH and CO in its atmosphere. The discovery paper argued the da…
Impact Rates in the Outer Solar System
David Nesvorny, Luke Dones, Mario De Pra +2
Previous studies of cometary impacts in the outer Solar System used the spatial distribution of ecliptic comets (ECs) from dynamical models that assumed ECs began on low-inclinatio…
Origin of Life Molecules in the Atmosphere After Big Impacts on the Early Earth
Nicholas F. Wogan, David C. Catling, Kevin J. Zahnle +1
The origin of life on Earth would benefit from a prebiotic atmosphere that produced nitriles, like HCN, which enable ribonucleotide synthesis. However, geochemical evidence suggest…
Atmospheric Erosion by Giant Impacts onto Terrestrial Planets: A Scaling Law for any Speed, Angle, Mass, and Density
Jacob A. Kegerreis, Vincent R. Eke, David C. Catling +3
We present a new scaling law to predict the loss of atmosphere from planetary collisions for any speed, angle, impactor mass, target mass, and body compositions, in the regime of g…
On the Composition of Young, Directly Imaged Giant Planets
J. I. Moses, M. S. Marley, K. Zahnle +6
The past decade has seen significant progress on the direct detection and characterization of young, self-luminous giant planets at wide orbital separations from their host stars.…