485 citations · 2.3k across the 26 of their papers we have counts for
26 papers
The Ultraviolet Spectrograph on ESA's Jupiter Icy Moons Explorer Mission (JUICE-UVS)
Kurt D. Retherford, Philippa M. Molyneux, Thomas K. Greathouse +51
The Jupiter Icy Moons Explorer (JUICE) mission, led by ESA, has an Ultraviolet Spectrograph (JUICE-UVS) contributed by NASA and built at Southwest Research Institute. JUICE-UVS is…
Jupiter's UV auroral response to a magnetospheric compression event
R. S. Giles, T. K. Greathouse, R. W. Ebert +12
The highly elliptical polar orbit of the Juno mission provides a unique opportunity to simultaneously measure the compression state of Jupiter's magnetosphere and the total power e…
The Lyman alpha Sky as Observed by New Horizons
G. R. Gladstone, J. M. Shull, W. R. Pryor +22
During September 2023 the Alice ultraviolet spectrograph on the New Horizons (NH) spacecraft was used to map diffuse Lyman alpha (Lya) emission over most of the sky, at a range of…
Jupiter Science Enabled by ESA's Jupiter Icy Moons Explorer
Leigh N. Fletcher, Thibault Cavalié, Davide Grassi +47
ESA's Jupiter Icy Moons Explorer (JUICE) will provide a detailed investigation of the Jovian system in the 2030s, combining a suite of state-of-the-art instruments with an orbital…
Meridional variations of CH in Jupiter's stratosphere from Juno UVS observations
Rohini S. Giles, Thomas K. Greathouse, Vincent Hue +10
The UVS instrument on the Juno mission records far-ultraviolet reflected sunlight from Jupiter. These spectra are sensitive to the abundances of chemical species in the upper atmos…
Detection of a bolide in Jupiter's atmosphere with Juno UVS
Rohini S. Giles, Thomas K. Greathouse, Joshua A. Kammer +9
The UVS instrument on the Juno mission recorded transient bright emission from a point source in Jupiter's atmosphere. The spectrum shows that the emission is consistent with a 960…
Possible Transient Luminous Events observed in Jupiter's upper atmosphere
Rohini S. Giles, Thomas K. Greathouse, Bertrand Bonfond +10
11 transient bright flashes were detected in Jupiter's atmosphere using the UVS instrument on the Juno spacecraft. These bright flashes are only observed in a single spin of the sp…
Pluto's Ultraviolet Spectrum, Surface Reflectance, and Airglow Emissions
Andrew J. Steffl, Leslie A. Young, Darrell F. Strobel +16
During the New Horizons spacecraft's encounter with Pluto, the Alice ultraviolet spectrograph conducted a series of observations that detected emissions from both the interplanetar…
Size and Shape Constraints of (486958) Arrokoth from Stellar Occultations
Marc W. Buie, Simon B. Porter, Peter Tamblyn +130
We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detecti…
Investigating Trends in Atmospheric Compositions of Cool Gas Giant Planets Using Spitzer Secondary Eclipses
Nicole L. Wallack, Heather A. Knutson, Caroline V. Morley +7
We present new 3.6 and 4.5 micron secondary eclipse measurements for five cool (less than approximately 1000 K) transiting gas giant planets: HAT-P-15b, HAT-P-17b, HAT-P-18b, HAT-P…
A Sub-Neptune Exoplanet with a Low-Metallicity Methane-Depleted Atmosphere and Mie-Scattering Clouds
Björn Benneke, Heather A. Knutson, Joshua Lothringer +15
With no analogues in the Solar System, the discovery of thousands of exoplanets with masses and radii intermediate between Earth and Neptune was one of the big surprises of exoplan…
Pluto's Haze as a Surface Material
W. M. Grundy, T. Bertrand, R. P. Binzel +37
Pluto's atmospheric haze settles out rapidly compared with geological timescales. It needs to be accounted for as a surface material, distinct from Pluto's icy bedrock and from the…
The Lyman-α Sky Background as Observed by New Horizons
G. Randall Gladstone, Wayne R. Pryor, S. Alan Stern +22
Recent observations of interplanetary medium (IPM) atomic hydrogen Lyman-α (Lyα) emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons (N…
Probing the Hill Sphere of (486958) 2014 MU: HST FGS Observations During the July 17, 2017 Stellar Occultation
J. A. Kammer, T. M. Becker, K. D. Retherford +6
We observed the July 17, 2017 stellar occultation of HD 168233 by the Kuiper Belt Object (486958) 2014 MU, the close flyby target of the extended New Horizons mission. Rathe…
New Horizons Upper Limits on O in Pluto's Present Day Atmosphere
J. A. Kammer, S. A. Stern, G. R. Gladstone +5
The surprising discovery by the Rosetta spacecraft of molecular oxygen (O) in the coma of comet 67P/Churyumov-Gerasimenko (Bieler et al. 2015) challenged our understanding of t…
Evidence for Possible Clouds in Pluto's Present Day Atmosphere
S. A. Stern, J. A. Kammer, E. L. Barth +10
Several trace constituents can reach saturation vapor pressure in Pluto's present day atmosphere. As such, we describe a search for discrete could features in Pluto's atmosphere us…
Structure and Composition of Pluto's atmosphere from the New Horizons Solar Ultraviolet Occultation
Leslie A. Young, Joshua A. Kammer, Andrew J. Steffl +23
The Alice instrument on NASA's New Horizons spacecraft observed an ultraviolet solar occultation by Pluto's atmosphere on 2015 July 14. The transmission vs. altitude was sensitive…
Haze in Pluto's Atmosphere
Andrew F. Cheng, Michael E. Summers, G. Randall Gladstone +11
Haze in Pluto's atmosphere was detected in images by both the Long Range Reconnaissance Imager (LORRI) and the Multispectral Visible Imaging Camera (MVIC) on New Horizons. LORRI ob…
Constraints on the Microphysics of Pluto's Photochemical Haze from New Horizons Observations
Peter Gao, Siteng Fan, Michael L. Wong +12
The New Horizons flyby of Pluto confirmed the existence of hazes in its atmosphere. Observations of a large high- to low- phase brightness ratio, combined with the blue color of th…
The Atmosphere of Pluto as Observed by New Horizons
G. Randall Gladstone, S. Alan Stern, Kimberly Ennico +31
Observations made during the New Horizons flyby provide a detailed snapshot of the current state of Pluto's atmosphere. While the lower atmosphere (at altitudes <200 km) is consist…
The Pluto system: Initial results from its exploration by New Horizons
S. A. Stern, F. Bagenal, K. Ennico +148
The Pluto system was recently explored by NASA's New Horizons spacecraft, making closest approach on 14 July 2015. Pluto's surface displays diverse landforms, terrain ages, albedos…
Spitzer Secondary Eclipse Observations of Five Cool Gas Giant Planets and Empirical Trends in Cool Planet Emission Spectra
Joshua A. Kammer, Heather A. Knutson, Michael R. Line +15
In this work we present Spitzer 3.6 and 4.5 micron secondary eclipse observations of five new cool (<1200 K) transiting gas giant planets: HAT-P-19b, WASP-6b, WASP-10b, WASP-39b, a…
Searching for Charon's Atmosphere: Predictions for the New Horizons Approach
Joshua A. Kammer, S. Alan Stern
Observations of Pluto's companion planet Charon have so far yielded no compelling evidence for a persistent atmosphere. However, with the upcoming encounter of New Horizons at the…
Spitzer Secondary Eclipses of the Dense, Modestly-irradiated, Giant Exoplanet HAT-P-20b Using Pixel-Level Decorrelation
Drake Deming, Heather Knutson, Joshua Kammer +13
HAT-P-20b is a giant exoplanet that orbits a metal-rich star. The planet itself has a high total density, suggesting that it may also have a high metallicity in its atmosphere. We…