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15 results on '"LeMouelic, S"'

1. Calcium Sulfate Characterized by ChemCam/Curiosity at Gale Crater, Mars

Author

Nachon, M, Clegg, S. N, Mangold, N, Schroeder, S, Kah, L. C, Dromart, G, Ollila, A, Johnson, J. R, Oehler, D. Z, Bridges, J. C, LeMouelic, S, Forni, O, Wiens, R. C, Rapin, W, Anderson, R. B, Blaney, D. L, Bell, J. F. , III, Clark, B, Cousin, A, Dyar, M. D, Ehlmann, B, Fabre, C, Gasnault, O, Grotzinger, J, Lasue, J, Lewin, E, Leveille, R, McLennan, S, Maurice, S, Meslin, P.-Y, Rice, M, Squyres, S. W, Stack, K, Sumner, D. Y, Vaniman, D, and Wellington, D

Subjects
Geophysics
Abstract

Onboard the Mars Science Laboratory (MSL) Curiosity rover, the ChemCam instrument consists of :(1) a Laser-Induced Breakdown Spectrometer (LIBS) for elemental analysis of the targets [1;2] and (2) a Remote Micro Imager (RMI), for the imaging context of laser analysis [3]. Within the Gale crater, Curiosity traveled from Bradbury Landing through the Rocknest region and into Yellowknife Bay (YB). In the latter, abundant light-toned fracture-fill material were seen [4;5]. ChemCam analysis demonstrate that those fracture fills consist of calcium sulfates [6].

Published
2014

2. Release of volatiles from a possible cryovolcano from near-infrared imaging of Titan

Author

Sotin, C., Jaumann, R., Buratti, B. J., Brown, R. H., Clark, R. N., Soderblom, L. A., Baines, K. H., Bellucci, G., Bibring, J.-P., Capaccioni, F., Cerroni, P., Combes, M., Coradini, A., Cruikshank, D. P., Drossart, P., Formisano, V., Langevin, Y., Matson, D. L., McCord, T. B., Nelson, R. M., Nicholson, P. D., Sicardy, B., LeMouelic, S., Rodriguez, S., Stephan, K., and Scholz, C. K.

Abstract

Author(s): C. Sotin (corresponding author) [1]; R. Jaumann [2]; B. J. Buratti [3]; R. H. Brown [4]; R. N. Clark [5]; L. A. Soderblom [6]; K. H. Baines [3]; G. [...]

Published
2005
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3. VIMS Observations of Titan During the First Two Close Flybys by the Cassini-Huygens Mission

Author

Rodriquez, S, LeMouelic, S, Sotin, C, Buratti, B. J, and Brown, R. H

Subjects
Lunar And Planetary Science And Exploration
Abstract

The joint NASA-ESA-ASI Cassini-Huygens mission reached the saturnian system on July 1st 2004. It started the observations of Saturn s environment including its atmosphere, rings, and satellites (Phoebe, Iapetus and Titan). Titan, one of the primary scientific interests of the mission, is veiled by an ubiquitous thick haze. Its surface cannot be seen in the visible but as the haze effects decrease with increasing wavelength, there is signal in the infrared atmospheric windows if no clouds are present. Onboard the Cassini spacecraft, the VIMS instrument (Visual and Infrared Mapping Spectrometer) is expected to pierce the veil of the hazy moon and successfully image its surface in the infrared wavelengths, taking hyperspectral images in the range 0.4 to 5.2 micron. On 26 October (TA) and 13 December 2004 (TB), the Cassini-Huygens mission flew over Titan at an altitude lower than 1200 km at closest approach. VIMS acquired several tens of image cubes with spatial resolution ranging from a few tens of kilometers down to 1.5 kilometer per pixel, demonstrating its capability for studying Titan s geology.

Published
2005

4. Dark and Bright Albedo Changes in the Wake of a Titan Rainstorm

Author

Barnes, Jason W., Buratti, B. J., Turtle, E. P., Bow, J., Dalba, P. A., Perry, J., Rodriguez, S., LeMouelic, S., Baines, K. H., Sotin, C., Lorenz, R. D., Malaska, M. J., McCord, T. B., Clark, R. N., Jaumann, R., Hayne, P. O., Nicholson, P. D., Soderblom, J. M., and Soderblom, L. A.

Subjects
Albedo, ISS, VIMS, Cassini, Titan
Published
2012

5. Liquid Ethane and Methane on Titan

Author

Clark, R. N., Curchin, J., Brown, R. H., Barnes, J. W., Jaumann, R., Soderblom, L., Cruikshank, D. P., Lunine, J., Stephan, K., Hoefen, T. H., Lemouelic, S., Sotin, C., Baines, K., Buratti, B., and Nicholson, P.

Subjects
Methan, Ethane, Cassini VIMS, Titan, Absorption
Published
2008

6. Mafic Mineralogy Variations Across Syrtis Major Shield and Surroundings as Inferred from Visible-Near-Infrared Spectroscopy by OMEGA/Mars Express

Author

Pinet, P. C., Heuripeau, Frédérick, Clenet, H., Chevrel, Serge, Daydou, Y. D., Baratoux, David, Rosemberg, C., Bibring, Jean-Pierre, Poulet, François, Gondet, Brigitte, Mustard, John F., Lemouelic, S., Bellucci, Giancarlo, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2007

7. Cassini/VIMS observations of Titan during the T20 flyby

Author

Sotin, C., LeMouelic, S., Brown, R.H., Barnes, J., Soderblom, L., Jaumann, R., Buratti, B.J., Clark, R.N., Baines, K.H., Nelson, R.M., Nicholson, P.D., and VIMS Science Team

Subjects
Planetengeologie, T20 Flyby, methane, infrared, VIMS, Cassini
Abstract

Since its insertion in Saturn’s environment in July 2004, the Cassini spacecraft has realized 20 Titan flybys. Three instruments can see through the haze: the ISS camera thanks to the infrared channel, the SAR (Synthetic Aperture Radar) and the Visual and Infrared Mapping Spectrometer (VIMS) [1]. During the first flyby, the VIMS showed its great potential to map and to characterize Titan’s surface despite scattering by haze particles and strong absorption of light by methane contained in the atmosphere [2]. Six infrared windows provide images of Titan’s surface and its spectral properties. At closest approach, the spatial resolution can be as good as 250 m/pixel, a resolution similar to that of the radar swaths. Because the VIMS capabilities were unexpected before the first observations, the VIMS had never been the prime instrument at closest approach before the T20 flyby that happened on 24 October 2006. This paper reports on the findings of this flyby.

Published
2007

8. Analysis of VIMS image cubes : clues on Titan's geology

Author

Sotin, C., Lemouelic, S., Rodriguez, S., Jaumann, R., Buratti, B., Brown, R., Clark, R., Soderblom, L., McCord, T., Team, Vims, Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2005

9. VIMS Observations of Titan During the First Two Close Flybys by the Cassini-Huygens Mission

Author

Rodriguez, S., Lemouelic, S., Sotin, C., Buratti, B., Brown, R., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2005

10. Mineralogy of the Magnetic anomaly Site South of Syrtis Derived from OMEGA/Mars Express Hyperspectral Data

Author

Sotin, C., Lemouelic, S., J.P., Combe, Quesnel, Y., Langlais, B., J.F., Mustard, Ladai, A., J.P., Bibring, Langevin, Y., Gendrin, A., Al., Et, Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2005

11. Mineralogical study of the martian surface by MGM analysis of OMEGA/MARS EXPRESS visible-infrared hyperspectral data

Author

Sotin, Christophe, Combe, Jean-Philippe, Despan, Daniela, Lemouelic, S., Gendrin, Aline, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Planétologie du LESIA, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2004

13. Possible identification of local deposits of Cl2SO2 on Io from NIMS/Galileo spectra

Author

Schmitt, B., Sotin, C., Jaumann, R., Buratti, B., Brown, R., Clark, R., Soderblom, L., Baines, K., Bellucci, G., Bibring, J.-P., Capaccioni, F., Cerroni, P., Combes, M., Coradini, A., Cruikshank, D., Drossart, P., Formisano, V., Langevin, Y., Matson, D., Mccord, T., Nelson, R., Nicholson, P., Sicardy, B., Lemouelic, S., Rodriguez, S., Stephan, K., Scholz, C., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Astrogeology Science Center [Flagstaff], United States Geological Survey [Reston] (USGS), Istituto di Fisica dello Spazio Interplanetario (IFSI), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), NASA Ames Research Center (ARC), Department of Earth and Space Sciences [Seattle], and University of Washington [Seattle]

Subjects
Atmospheric Science, Materials science, Infrared, [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Analytical chemistry, Soil Science, Mineralogy, Infrared spectroscopy, Aquatic Science, Oceanography, Spectral line, Ion, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Radiative transfer, Molecule, ComputingMilieux_MISCELLANEOUS, Earth-Surface Processes, Water Science and Technology, geography, geography.geographical_feature_category, Ecology, Paleontology, Forestry, Geophysics, Volcano, Space and Planetary Science, Sublimation (phase transition)
Abstract

[1] Starting from the recent discovery of chlorine ions in Io's plasma torus, we searched for evidence of Cl-bearing species at the surface of the satellite. We have identified Cl2SO2, with possible contribution by ClSO2, as candidates for the absorber(s) of the 3.92 μm band locally present in NIMS/Galileo spectra of the reddish deposits south of Marduk's volcanic center. Low-temperature laboratory measurements of the infrared spectra of several Cl and S-bearing molecules in the solid state, coupled with radiative transfer modeling, first allowed us to select four candidate molecules. Their abundance and stability at Io's surface have been tested through formation, condensation, and destruction scenarios using volcanic and atmospheric models completed with chemical and thermodynamical data. In particular, the sublimation rates of solid Cl2SO2 and SO2 have been measured to study the selective condensation of these species. Cl2SO2 diluted at ∼1% in a millimeter thick layer of solid SO2 is the favorite candidate for the 3.92 μm band. We strongly favor a formation process of this molecule by heterogeneous reaction of Cl atoms on SO2 ice condensing on plume particles or at Io's surface. The high Cl2SO2 abundance observed implies that a Cl-rich volcanic eruption ([Cl − (Na + K)]/S > 0.015) occurred at Marduk. ClSO2 is a potential additional contributor to the band. Pure H2S is safely discarded as it is extremely unstable at Io's surface but an upper limit of 0.01% is derived for H2S diluted in SO2. Finally, chemical constraints allow us to firmly exclude H2S2. We also suggest that Cl2S may be an alternative explanation for the reddish coloration of some volcanic deposits.

Published
2003
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