5 papers
Constraints on the Atmospheric Composition of 2002 XV from JWST Spectroscopy
Ian Wong, Silvia Protopapa, Emmanuel Lellouch
The recent detection of an atmosphere surrounding the trans-Neptunian object (TNO) 2002 XV from stellar occultation measurements has challenged the longstanding view that on…
JWST reveals anomalously enhanced methane outgassing from below Chiron's water ice and carbon dioxide bearing surface
Ian Wong, Silvia Protopapa, Aurélie Guilbert-Lepoutre +7
Centaurs are inward-scattered Kuiper belt objects, with some exhibiting comet-like activity. The physical mechanisms powering this activity remain poorly understood, with carbon mo…
JWST/NIRSpec Observations of Salacia-Actaea and Máni: Exploring Population-level Trends among Water-ice-rich Kuiper Belt Objects
Ian Wong, Bryan J. Holler, Silvia Protopapa +9
We present observations of the midsized Kuiper Belt objects (KBOs) SalaciaActaea and Máni, obtained with the Near-Infrared Spectrograph on JWST. The satellite Actaea was fully…
Laboratory Investigation of CO2-Driven Enhancement of Radiolytic H2O2 on Europa and Other Icy Moons
Bereket D. Mamo, Ujjwal Raut, Ben D. Teolis +5
Observations of Europa's leading hemisphere reveal elevated H2O2 in the warmer, low latitude chaos terrains compared to the colder, polar regions. This distribution disagrees with…
JWST Reveals Spectral Tracers of Recent Surface Modification on Europa
Richard J. Cartwright, Charles A. Hibbits, Bryan J. Holler +9
Europa has been modified by a variety of geologic processes, exposing internally-derived materials that are heavily irradiated by charged particles trapped in Jupiter's magnetosphe…