activity
20182026
most citedThe origin and fate of O in Europa's ice: an atmospheric perspective

18 citations · 49 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.EP2026

Observational planning for the 2026 August 5 Falcon 9 Upper Stage lunar impact

Benjamin Fernando, Jennifer Heldmann, Bill Grey +20

On 2026 August 5, at approximately 06:35 UT, a spent Falcon 9 upper stage will impact the lunar surface near Einstein Crater. This event will occur on sunlit terrain near the easte…

astro-ph.EP2025★ 4 cited

Detection of New Auroral Emissions at Io and Implications for Its Interaction with the Plasma Torus

Zachariah Milby, Katherine de Kleer, Carl Schmidt

We observed Io's optical aurora in eclipse on six nights between 2022 and 2024 using Keck I/HIRES. Spectra revealed 13 new auroral emissions not identified previously, tripling the…

astro-ph.EP2025

Sodium and Potassium Linewidths as an Atmospheric Escape Diagnostic at Mercury

Patrick Lierle, Carl Schmidt

The spatial distribution and linewidth of Mercury's sodium and potassium exosphere were observed using a combination of long-slit and high-resolution point spectroscopy. Effective…

astro-ph.EP2025★ 7 cited

Spatiotemporal Variations of Temperature in Jupiter's Upper Atmosphere

Kate Roberts, Luke Moore, James O'Donoghue +5

Global temperatures in Jupiter's upper atmosphere are poorly constrained. Other than an in situ measurement by the Galileo Probe, all temperature data come from remote sensing meth…

astro-ph.EP2024

Redshifted Sodium Transient near Exoplanet Transit

Apurva V. Oza, Julia V. Seidel, H. Jens Hoeijmakers +21

Neutral sodium (Na I) is an alkali metal with a favorable absorption cross section such that tenuous gases are easily illuminated at select transiting exoplanet systems. We examine…

astro-ph.EP2024★ 10 cited

Short-Timescale Spatial Variability of Ganymede's Optical Aurora

Zachariah Milby, Katherine de Kleer, Carl Schmidt +1

Ganymede's aurora are the product of complex interactions between its intrinsic magnetosphere and the surrounding Jovian plasma environment and can be used to derive both atmospher…

astro-ph.EP2024

Jovian sodium nebula and Io plasma torus S and brightnesses 2017 -- 2023: insights into volcanic vs. sublimation supply

Jeffrey P. Morgenthaler, Carl A. Schmidt, Marissa F. Vogt +2

We present first results derived from the largest collection of contemporaneously recorded Jovian sodium nebula and Io plasma torus (IPT) in [S II] 673.1 nm images assembled to dat…

astro-ph.EP2024★ 10 cited

Mass supply from Io to Jupiter's magnetosphere

L. Roth, A. Blöcker, K. de Kleer +24

Since the Voyager mission flybys in 1979, we have known the moon Io to be both volcanically active and the main source of plasma in the vast magnetosphere of Jupiter. Material lost…

astro-ph.EP2018★ 18 cited

The origin and fate of O in Europa's ice: an atmospheric perspective

Robert E. Johnson, Apurva V. Oza, Francois Leblanc +2

The early prediction and subsequent detection of an O atmosphere on Europa, coupled with the discovery that Europa has an ocean under its ice mantle, has made this moon a prime…