Current observation programs

Title Telescope Type Role
Jupiter System JWST ERS Science Team
Are the Enceladus geysers the source of Saturn’s water ? ALMA Cycle 5 PI
Constraining Jupiter’s atmospheric chemistry and dynamics from H2O mapping in ALMA band 5 ALMA Cycle 5 PI
The first direct measurement of Saturn’s stratospheric winds ALMA Cycle 5 Co-I
Constraining the internal and external sources of CO in Saturn’s atmosphere IRTF Standard Co-I
Constraining Jupiter’s atmospheric chemistry and dynamics from post-SL9 species mapping ALMA Cycle 4 PI
HCN emission: a diagnostic of Enceladus cryovolcanic activity and torus dynamics ALMA Cycle 2 Co-I
Probing the vertical structure of Saturn’s storm with ALMA ALMA Cycle 0 PI
Water and related chemistry in the Solar System Herschel Guaranteed Time

Key Program

Associate Scientist
Probing the temperature and chemistry of Saturn’s storm with Herschel Herschel Open Time PI
Probing the Enceladus torus with Herschel Herschel Open Time Co-I
Variability in Ice Giant Stratospheres: Implications for Radiative, Chemical and Dynamical Processes Herschel Open Time Co-I
The spatial distribution of CO in Saturn SMA Standard PI
Observation of an equatorial jet in the atmosphere of Jupiter IRAM-30m Standard PI
The origin of CO in Saturn’s atmosphere VLT Short Program Co-I
Jupiter’s stratospheric HCN, hydrocarbon and temperature fields SOFIA Cycle 3 Co-I

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Public conferences

The public conferences I have given (or will give) so far are summarized in the table below. Feel free to contact me for more information or if you are interested in one of these conferences.

Title Event Location Date More
Spectroscopie submillimétrique Association Universitaire d’Astronomie (Université de Bordeaux) Talence 26 March 2018  poster
L’eau dans le Système Solaire externe Journée portes ouvertes de l’Observatoire de Dax Dax 5 August 2016 Event website, poster
Eclipse solaire: science et croyances Café Sciences Talence 20 March 2015  poster
La machine d’Anticythère et les grands cycles astronomiques 20 March 2015 solar eclipse Observatoire de Bordeaux 20 March 2015 local news article
À la recherche de l’eau sur Mars Université du Temps Libre de Géologie Bordeaux 14 October 2014
La machine d’Anticythère et les grands cycles astronomiques Société Astronomique de Bordeaux Bordeaux 25 June 2014 poster
La machine d’Anticythère et les grands cycles astronomiques Club Jalles Astronomie Martignas-sur-Jalles 13 June 2014
La machine d’Anticythère et les grands cycles astronomiques Société Française de Physique Bordeaux 18 March 2014
ALMA, un observatoire géant pour dévoiler les secrets des planètes Société Astronomique de Nantes Nantes 21 February 2014 Event website
À la recherche de l’eau sur Mars Journée portes ouvertes de l’Observatoire de Dax Dax 9 August 2013 Event website
L’eau dans le système solaire vue par le télescope spatial Herschel Club Jalles Astronomie Martignas-sur-Jalles 8 June 2012
La conquête de Mars, À la recherche de l’eau sur Mars Rencontres Astronomiques de Classun Classun 9 July 2011 Event website, local news article
? Société Astronomique de Bordeaux Bordeaux 2008
? Club Jalles Astronomie Martignas-sur-Jalles 2008

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An external source of CO for Uranus

With the Herschel Space Observatory, my colleagues and I have detected CO (carbon monoxide) in the stratosphere of Uranus. The analysis and interpretation of the data demonstate that it is supplied by an external source. Is this oxygen delivered by comets, as in Jupiter (see this post), or by interplanetary dust particles? Complementary observations (e.g., with ALMA) are required to disentangle the two origins.

CO emission of Uranus as observed with Herschel. Different source models produce the vertical profiles shown in the right panel. These profiles translate into the emission lines with the corresponding colors in the left panel. Observation/model comparison proves that CO has an external source.

Reference: Cavalié et al. 2014, Astronomy and Astrophysics 562, A33.

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