Article
Astronomy & Astrophysics
Sebastien Rodriguez, Sandrine Vinatier, Daniel Cordier, Gabriel Tobie, Richard K. Achterberg, Carrie M. Anderson, Sarah Badman, Jason W. Barnes, Erika L. Barth, Bruno Bezard, Nathalie Carrasco, Benjamin Charnay, Roger N. Clark, Patrice Coll, Thomas Cornet, Athena Coustenis, Isabelle Couturier-Tamburelli, Michel Dobrijevic, F. Michael Flasar, Remco de Kok, Caroline Freissinet, Marina Galand, Thomas Gautier, Wolf D. Geppert, Caitlin A. Griffith, Murthy S. Gudipati, Lina Z. Hadid, Alexander G. Hayes, Amanda R. Hendrix, Ralf Jaumann, Donald E. Jennings, Antoine Jolly, Klara Kalousova, Tommi T. Koskinen, Panayotis Lavvas, Sebastien Lebonnois, Jean-Pierre Lebreton, Alice Le Gall, Emmanuel Lellouch, Stephane Le Mouelic, Rosaly M. C. Lopes, Juan M. Lora, Ralph D. Lorenz, Antoine Lucas, Shannon MacKenzie, Michael J. Malaska, Kathleen Mandt, Marco Mastrogiuseppe, Claire E. Newman, Conor A. Nixon, Jani Radebaugh, Scot C. Rafkin, Pascal Rannou, Ella M. Sciamma-O'Brien, Jason M. Soderblom, Anezina Solomonidou, Christophe Sotin, Katrin Stephan, Darrell Strobel, Cyril Szopa, Nicholas A. Teanby, Elizabeth P. Turtle, Veronique Vuitton, Robert A. West
Summary: In response to ESA's Voyage 2050 announcement, the proposed POSEIDON mission aims to explore Saturn's largest moon, Titan, through joint orbital and in situ investigations. The mission aims to exceed the accomplishments of the Cassini-Huygens mission and explore Titan's northern latitudes in complement with NASA's upcoming Dragonfly mission. The ideal arrival time at Titan would be slightly before the next northern Spring equinox in 2039.
EXPERIMENTAL ASTRONOMY
(2022)
Article
Astronomy & Astrophysics
Thierry Fouchet, Jean-Michel Reess, Franck Montmessin, Rafik Hassen-Khodja, Napoleon Nguyen-Tuong, Olivier Humeau, Sophie Jacquinod, Laurent Lapauw, Jerome Parisot, Marion Bonafous, Pernelle Bernardi, Frederic Chapron, Alexandre Jeanneau, Claude Collin, Didier Zeganadin, Patricia Nibert, Sadok Abbaki, Christophe Montaron, Cyrille Blanchard, Vartan Arslanyan, Ourdya Achelhi, Claudine Colon, Clement Royer, Vincent Hamm, Mehdi Beuzit, Francois Poulet, Cedric Pilorget, Lucia Mandon, Olivier Forni, Agnes Cousin, Olivier Gasnault, Paolo Pilleri, Bruno Dubois, Cathy Quantin, Pierre Beck, Olivier Beyssac, Stephane Le Mouelic, Jeffrey R. Johnsson, Timothy H. McConnochie, Sylvestre Maurice, Roger C. Wiens
Summary: This article presents the Infrared spectrometer of SuperCam Instrument Suite, which allows the Mars 2020 Perseverance Rover to study Martian mineralogy in the Jezero crater remotely. The SuperCam IR spectrometer is designed to acquire spectra in the 1.3-2.6 μm range with high spectral resolution. It works in conjunction with other remote sensing techniques to explore the mineral diversity and guide the sampling tasks of the Perseverance Rover.
Article
Multidisciplinary Sciences
S. Maurice, B. Chide, N. Murdoch, R. D. Lorenz, D. Mimoun, R. C. Wiens, A. Stott, X. Jacob, T. Bertrand, F. Montmessin, N. L. Lanza, C. Alvarez-Llamas, S. M. Angel, M. Aung, J. Balaram, O. Beyssac, A. Cousin, G. Delory, O. Forni, T. Fouchet, O. Gasnault, H. Grip, M. Hecht, J. Hoffman, J. Laserna, J. Lasue, J. Maki, J. McClean, P. -y. Meslin, S. Le Mouelic, A. Munguira, C. E. Newman, J. A. Rodriguez Manfredi, J. Moros, A. Ollila, P. Pilleri, S. Schroder, M. de la Torre Juarez, T. Tzanetos, K. M. Stack, K. Farley, K. Williford
Summary: The acoustic environment on Mars was unknown before the Perseverance rover landing. This study presents the first characterization of the acoustic environment on Mars using Perseverance microphone recordings, providing important data for atmospheric studies.
Article
Geochemistry & Geophysics
Patrick J. J. Gasda, Jade Comellas, Ari Essunfeld, Debarati Das, Alexander B. B. Bryk, Erwin Dehouck, Susanne P. P. Schwenzer, Laura Crossey, Kenneth Herkenhoff, Jeffrey R. R. Johnson, Horton Newsom, Nina L. L. Lanza, William Rapin, Walter Goetz, Pierre-Yves Meslin, John C. C. Bridges, Ryan Anderson, Gael David, Stuart M. R. Turner, Michael T. T. Thorpe, Linda Kah, Jens Frydenvang, Rachel Kronyak, Gwenael Caravaca, Ann Ollila, Stephane Le Mouelic, Matthew Nellessen, Megan Hoffman, Deirdra Fey, Anges Cousin, Roger C. C. Wiens, Samuel M. M. Clegg, Sylvestre Maurice, Olivier Gasnault, Dorothea Delapp, Adriana Reyes-Newell
Summary: Researchers analyzed diagenetic features in the clay-rich Glen Torridon region of Mars' Gale crater, finding evidence for multiple generations of fluids and a wide range of chemical reactions. These discoveries provide strong evidence for habitability of groundwater in Gale crater and have implications for prebiotic chemistry in early Mars.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2022)
Article
Geochemistry & Geophysics
Erwin Dehouck, Agnes Cousin, Nicolas Mangold, Jens Frydenvang, Olivier Gasnault, Olivier Forni, William Rapin, Patrick J. Gasda, Gwenael Caravaca, Gael David, Candice C. Bedford, Jeremie Lasue, Pierre-Yves Meslin, Kristin Rammelkamp, Marine Desjardins, Stephane Le Mouelic, Michael T. Thorpe, Valerie K. Fox, Kristen A. Bennett, Alexander B. Bryk, Nina L. Lanza, Sylvestre Maurice, Roger C. Wiens
Summary: Glen Torridon is a topographic trough on Mars with relatively strong spectral signatures of clay minerals. The Curiosity rover explored the area for over 700 Martian days to understand the geologic context of clay mineral formation and determine the intensity of aqueous alteration. Analysis of the bedrock's major-element geochemistry reveals distinct chemical compositions and mineralogical interpretations. Overall, the alteration in Glen Torridon shows elevated Chemical Index of Alteration values, suggesting the formation of clay minerals through open-system weathering.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2022)
Correction
Multidisciplinary Sciences
S. Maurice, B. Chide, N. Murdoch, R. D. Lorenz, D. Mimoun, R. C. Wiens, A. Stott, X. Jacob, T. Bertrand, F. Montmessin, N. L. Lanza, C. Alvarez-Llamas, S. M. Angel, M. Aung, J. Balaram, O. Beyssac, A. Cousin, G. Delory, O. Forni, T. Fouchet, O. Gasnault, H. Grip, M. Hecht, J. Hoffman, J. Laserna, J. Lasue, J. Maki, J. McClean, P. -Y. Meslin, S. Le Mouelic, A. Munguira, C. E. Newman, J. A. Rodriguez Manfredi, J. Moros, A. Ollila, P. Pilleri, S. Schroder, M. de la Torre Juarez, T. Tzanetos, K. M. Stack, K. Farley, K. Williford
Article
Geochemistry & Geophysics
C. Royer, T. Fouchet, L. Mandon, F. Montmessin, F. Poulet, O. Forni, J. R. Johnson, C. Legett, S. Le Mouelic, O. Gasnault, C. Quantin-Nataf, P. Beck, E. Dehouck, E. Clave, A. M. Ollila, C. Pilorget, P. Bernardi, J. -M. Reess, P. Pilleri, A. Brown, R. T. Newell, E. Cloutis, S. Maurice, R. C. Wiens
Summary: The Mars 2020 Perseverance rover successfully landed on the Jezero crater, where it will search for evidence of past Martian life. The SuperCam instrument, an international collaboration, will play a crucial role in this mission by providing high-quality mineralogy, chemistry, and color imaging data. The instrument's infrared spectrometer has been calibrated using observations of the Aluwhite SuperCam Calibration Target, allowing scientists to study the 2.5 μm absorption band associated with phyllosilicates-carbonates mixtures in the Seitah unit.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Geochemistry & Geophysics
A. M. Schoenfeld, A. Solomonidou, M. J. Malaska, R. M. C. Lopes, S. P. D. Birch, S. Le Mouelic, M. Florence, T. Verlander, S. D. Wall, C. Elachi
Summary: We conducted a mapping study of the Soi crater region on Titan using the methodology presented by Malaska, Lopes, Williams, et al. (2016) and Schoenfeld et al. (2021). We utilized Cassini Synthetic Aperture Radar (SAR) as the primary mapping data set and identified 22 geomorphological units, including previously unexplored features such as sharp-edged depressions, ramparts, and bright gradational plains. The region is dominated by plains, followed by dunes, mountains/hummocky terrains, basin and lakes, labyrinth terrains, and crater terrains.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Geochemistry & Geophysics
L. Mandon, C. Quantin-Nataf, C. Royer, P. Beck, T. Fouchet, J. R. Johnson, E. Dehouck, S. Le Mouelic, F. Poulet, F. Montmessin, C. Pilorget, O. Gasnault, O. Forni, L. E. Mayhew, O. Beyssac, T. Bertrand, E. Clave, P. Pinet, A. J. Brown, C. Legett, J. Tarnas, E. A. Cloutis, G. Poggiali, T. Fornaro, S. Maurice, R. C. Wiens, SuperCam Team
Summary: The Perseverance rover examined the mineralogy of the rocks, regolith, and dust in the Jezero crater on Mars. It found that the bedrock contains olivine-bearing rocks at the bottom and high-Ca pyroxene-bearing rocks at the top, suggesting an igneous origin. Aqueous alteration was detected in most of the rocks, indicating widespread but limited alteration of the crater floor. The diverse mineralogy suggests at least two stages of aqueous alteration, forming phyllosilicates and oxyhydroxides, and later sulfates.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Astronomy & Astrophysics
M. Es-sayeh, S. Rodriguez, M. Coutelier, P. Rannou, B. Bezard, L. Maltagliati, T. Cornet, B. Grieger, E. Karkoschka, S. Le Mouelic, A. Le Gall, C. Neish, S. MacKenzie, A. Solomonidou, C. Sotin, A. Coustenis
Summary: This study analyzed data from the Cassini spacecraft's Visual and Infrared Mapping Spectrometer (VIMS) to study the surface composition and landscape formation of the Selk crater region on Titan. The results suggest that the mountainous terrains in the area are likely dominated by fine grains of organic sediment, which may be transported to the lowlands by rivers and deposited as sand particles. These findings are important for the preparation of the Dragonfly mission and future exploration of Titan's surface composition and geology.
PLANETARY SCIENCE JOURNAL
(2023)
Article
Geochemistry & Geophysics
Allan H. Treiman, Nina L. Lanza, Scott VanBommel, Jeff Berger, Roger Wiens, Thomas Bristow, Jeffrey Johnson, Melissa Rice, Reginald Hart, Amy McAdam, Patrick Gasda, Pierre-Yves Meslin, Albert Yen, Amy J. Williams, Ashwin Vasavada, David Vaniman, Valerie Tu, Michael Thorpe, Elizabeth D. Swanner, Christina Seeger, Susanne P. Schwenzer, Susanne Schroeder, Elizabeth Rampe, William Rapin, Silas J. Ralston, Tanya Peretyazhko, Horton Newsom, Richard V. Morris, Douglas Ming, Matteo Loche, Stephane Le Mouelic, Christopher House, Robert Hazen, John P. Grotzinger, Ralf Gellert, Olivier Gasnault, Woodward W. Fischer, Ari Essunfeld, Robert T. Downs, Gordon W. Downs, Erwin Dehouck, Laura J. Crossey, Agnes Cousin, Jade M. Comellas, Joanna V. Clark, Benton Clark III, Steve Chipera, Gwenael Caravaca, John Bridges, David F. Blake, Ryan Anderson
Summary: The MSL Curiosity rover discovered manganese-phosphorus nodules on Mars, which were formed from vivianite and went through mineralogical transformations to laueite/strunzite and eventually to hematite and pyrolusite.
Article
Astronomy & Astrophysics
N. W. Kutsop, A. G. Hayes, P. M. Corlies, S. Le Mouelic, J. I. Lunine, C. A. Nixon, P. Rannou, S. Rodriguez, M. T. Roman, C. Sotin, T. Tokano
Summary: We analyzed data from the Cassini spacecraft to understand the characteristics and changes of the circumglobal annuli in the stratosphere of Titan. The annuli were observed at different latitudes, with dark and bright regions. We also observed the presence of a south polar annulus, although it was not detected by the Cassini spacecraft. The stratosphere appears to rotate around the north pole or a point slightly offset from the solid-body rotation axis.
PLANETARY SCIENCE JOURNAL
(2022)