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Lucy Mission to the Trojan Asteroids: Instrumentation and Encounter Concept of Operations

The Planetary Science Journal American Astronomical Society 2:5 (2021) 172

Authors:

Catherine B Olkin, Harold F Levison, Michael Vincent, Keith S Noll, John Andrews, Sheila Gray, Phil Good, Simone Marchi, Phil Christensen, Dennis Reuter, Harold Weaver, Martin Pätzold, James F Bell, Victoria E Hamilton, Neil Dello Russo, Amy Simon, Matt Beasley, Will Grundy, Carly Howett, John Spencer, Michael Ravine, Michael Caplinger
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Seismic constraints from a Mars impact experiment using InSight and Perseverance

Nature Astronomy

Authors:

Benjamin Fernando et al

Abstract:

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Tracing the earliest stages of hydrothermal alteration on the CM chondrite parent body

Meteoritics and Planetary Science Wiley 56:9 (2021) 1708-1728

Authors:

AJ King, E Mason, HC Bates, PF Schofield, KL Donaldson Hanna, NE Bowles, SS Russell
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A multispecies pseudoadiabat for simulating condensable-rich exoplanet atmospheres

ArXiv 2108.12902 (2021)

Authors:

RJ Graham, Tim Lichtenberg, Ryan Boukrouche, Ray Pierrehumbert
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Meridional variations on C2H2 in Jupiter's stratosphere from Juno UVS observations

Journal of Geophysical Research: Planets American Geophysical Union 126:8 (2021) e2021JE006928

Authors:

Rohini S Giles, Thomas K Greathouse, Vincent Hue, G Randall Gladstone, Henrik Melin, Leigh N Fletcher, Patrick GJ Irwin, Joshua A Kammer, Maarten H Versteeg, Bertrand Bonfond, Denis C Grodent, Scott J Bolton, Steven M Levin

Abstract:

The Ultraviolet Spectrograph (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 atmosphere and to the distribution of the stratospheric haze layer. We combine observations from the first 30 perijoves of the mission in order to study the meridional distribution of acetylene (C2H2) in Jupiter's stratosphere. We find that the abundance of C2H2 decreases toward the poles by a factor of 2–4, in agreement with previous analyses of mid-infrared spectra. This result is expected from insolation rates: near the equator, the UV solar flux is higher, allowing more C2H2 to be generated from the UV photolysis of CH4. The decrease in abundance toward the poles suggests that horizontal mixing rates are not rapid enough to homogenize the latitudinal distribution.
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