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Evidence for disequilibrium chemistry from vertical mixing in hot Jupiter atmospheres: A comprehensive survey of transiting close-in gas giant exoplanets with warm-Spitzer/IRAC

ASTRONOMY & ASTROPHYSICS 648 (2021) ARTN A127

Authors:

Claire Baxter, Jean-Michel Desert, Shang-Min Tsai, Kamen O Todorov, Jacob L Bean, Drake Deming, Vivien Parmentier, Jonathan J Fortney, Michael Line, Daniel Thorngren, Raymond T Pierrehumbert, Adam Burrows, Adam P Showman
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Upper limits for phosphine (PH3) in the atmosphere of Mars

Astronomy and Astrophysics EDP Sciences 649:May 2021 (2021) L1

Authors:

Ks Olsen, A Trokhimovskiy, As Braude, O Korablev, A Fedorova, Colin Wilson, Patrick Irwin, Juan Alday Parejo

Abstract:

Phosphine (PH3) is proposed to be a possible biomarker in planetary atmospheres and has been claimed to have been observed in the atmosphere of Venus, sparking interest in the habitability of Venus’s atmosphere. Observations of another biomarker, methane (CH4), have been reported several times in the atmosphere of Mars, hinting at the possibility of a past or present biosphere. The Atmospheric Chemistry Suite on the ExoMars Trace Gas Orbiter has a spectral range that includes several absorption lines of PH3 with line strengths comparable to previously observed CH4 lines. The signature of PH3 was not observed in the 192 observations made over a full Martian year of observations, and here we report upper limits of 0.1–0.6 ppbv.
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Lucy Mission to the Trojan Asteroids: Instrumentation and Encounter Concept of Operations

(2021)

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 Patzold, 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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Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer

The Planetary Science Journal American Astronomical Society 2:2 (2021) 75

Authors:

Carly JA Howett, Stuart J Robbins, Bryan J Holler, Amanda Hendrix, Karl B Fielhauer, Mark E Perry, Fazle E Siddique, Clint T Apland, James C Leary, S Alan Stern, Heather Elliott, Francis Nimmo, Simon B Porter, Silvia Protopapa, Kelsi N Singer, Orenthal J Tucker, Anne J Verbiscer, Bruce B Andrews, Stewart S Bushman, Adam V Crifasi, Doug Crowley, Clint L Edwards, Carolyn M Ernst, Blair D Fonville, David P Frankford, Dan T Gallagher, Mark E Holdridge, Jack W Hunt, JJ Kavelaars, Chris J Krupiarz, James S Kuhn, William McKinnon, Hari Nair, David H Napolillo, Jon P Pineau, Jani Radebaugh, Rachel O Sholder, John R Spencer, Adam Thodey, Samantha R Walters, Bruce D Williams, Robert J Wilson, Leslie A Young
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A Comodulation Analysis of Atmospheric Energy Injection Into the Ground Motion at InSight, Mars

Journal of Geophysical Research Planets American Geophysical Union (AGU) 126:4 (2021)

Authors:

C Charalambous, AE Stott, WT Pike, JB McClean, T Warren, A Spiga, D Banfield, RF Garcia, J Clinton, S Stähler, S Navarro, P Lognonné, J‐R Scholz, T Kawamura, M van Driel, M Böse, S Ceylan, A Khan, A Horleston, G Orhand‐Mainsant, LM Sotomayor, N Murdoch, D Giardini, WB Banerdt
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