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Stefan Pelletier

université de genève

18H-index
85Paper Count
873Citation Count
Published Papers 31
Publication Date
Magnetic field strengths of hot giant exoplanets consistent with Solar System values
err2026-06-02
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PREAI
errJulia V. Seidel; Vivien Parmentier; Bibiana Prinoth; Thea Hood; Nishil Mehta; Valentin De Lia; Konstantin Batygin; Tristan Guillot; Ragnar Van den Broeck; Hayley Beltz; Brian Thorsbro; Florian Debras; Daniel D. B. Koll; Thaddeus D. Komacek; Emily Rauscher; Lorenzo Pino; Matteo Brogi; Joost P. Wardenier; Jacob L. Bean; Björn Benneke; Jean-Michel L. B. Désert; Pablo Drake; Siddharth Gandhi; Mark Hammond; David Kasper; Michael R. Line; Elspeth K. H. Lee; Stefan Pelletier; Andreas Seifahrt; Adrien Simonnin; Peter C. B. Smith; Kevin B. Stevenson
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A Stellar magnesium to silicon ratio in the atmosphere of an exoplanet
err2026-02-18
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errOAAI
errJorge A. Sanchez; Peter C. B. Smith; Krishna Kanumalla; Luis Welbanks; Michael R. Line; Stefan Pelletier; Steven Desch; Patrick Young; Jennifer Patience; Jacob Bean; Matteo Brogi; Dan Jaffe; Gregory N. Mace; Megan Weiner Mansfield; Vatsal Panwar; Vivien Parmentier; Lorenzo Pino; Arjun Baliga Savel; Lennart van Sluijs; Joost P. Wardenier
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Diversity in the haziness and chemistry of temperate sub-Neptunes
err2025-12-12
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errOAAI
errPierre-Alexis Roy; Björn Benneke; Marylou Fournier-Tondreau; Louis-Philippe Coulombe; Caroline Piaulet-Ghorayeb; David Lafrenière; Romain Allart; Nicolas B. Cowan; Lisa Dang; Doug Johnstone; Adam B. Langeveld; Stefan Pelletier; Michael Radica; Jake Taylor; Loïc Albert; René Doyon; Laura Flagg; Ray Jayawardhana; Ryan J. MacDonald; Jake D. Turner
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A complex structure of escaping helium spanning more than half the orbit of the ultra-hot Jupiter WASP-121 b
err2025-12-08
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errOAAI
errRomain Allart; Louis-Philippe Coulombe; Yann Carteret; Jared Splinter; Lisa Dang; Vincent Bourrier; David Lafrenière; Loïc Albert; Étienne Artigau; Björn Benneke; Nicolas B. Cowan; René Doyon; Vigneshwaran Krishnamurthy; Ray Jayawardhana; Doug Johnstone; Adam B. Langeveld; Michael R. Meyer; Stefan Pelletier; Caroline Piaulet-Ghorayeb; Michael Radica; Jake Taylor; Jake D. Turner
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Continuous helium absorption from both the leading and trailing tails of WASP-107 b
err2025-12-01
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PREAI
errVigneshwaran Krishnamurthy; Yann Carteret; Caroline Piaulet-Ghorayeb; Jared Splinter; Dhvani Doshi; Michael Radica; Louis-Philippe Coulombe; Romain Allart; Vincent Bourrier; Nicolas B. Cowan; René Doyon; David Lafrenière; Loïc Albert; Björn Benneke; Lisa Dang; Ray Jayawardhana; Doug Johnstone; Lisa Kaltenegger; Adam B. Langeveld; Stefan Pelletier; Jason F. Rowe; Pierre-Alexis Roy; Jake Taylor; Jake D. Turner
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Precise Constraints on the Energy Budget of WASP-121 b from Its JWST NIRISS/SOSS Phase Curve
err2025-11-13
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errOAAI
errJared Splinter; Louis-Philippe Coulombe; Robert C. Frazier; Nicolas B. Cowan; Emily Rauscher; Lisa Dang; Michael Radica; Sean Collins; Stefan Pelletier; Romain Allart; Ryan J. MacDonald; David Lafrenière; Loïc Albert; Björn Benneke; René Doyon; Ray Jayawardhana; Doug Johnstone; Vigneshwaran Krishnamurthy; Caroline Piaulet-Ghorayeb; Lisa Kaltenegger; Michael R. Meyer; Jake Taylor; Jake D. Turner
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Strict Limits on Potential Secondary Atmospheres on the Temperate Rocky Exo-Earth TRAPPIST-1 d
err2025-08-13
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PREAI
errCaroline Piaulet-Ghorayeb; Björn Benneke; Martin Turbet; Keavin Moore; Pierre-Alexis Roy; Olivia Lim; René Doyon; Thomas J. Fauchez; Loïc Albert; Michael Radica; Louis-Philippe Coulombe; David Lafrenière; Nicolas B. Cowan; Danika Belzile; Kamrul Musfirat; Mehramat Kaur; Alexandrine L’Heureux; Doug Johnstone; Ryan J. MacDonald; Romain Allart; Lisa Dang; Lisa Kaltenegger; Stefan Pelletier; Jason F. Rowe; Jake Taylor; Jake D. Turner
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Transmission spectroscopy of WASP-52 b with JWST NIRISS: water and helium atmospheric absorption, alongside prominent star-spot crossings
err2025-05-01
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errOAAI
errFournier-Tondreau, Marylou; Pan, Yanbo; Morel, Kim; Lafreniere, David; MacDonald, Ryan J.; Coulombe, Louis-Philippe; Allart, Romain; Albert, Loic; Radica, Michael; Piaulet-Ghorayeb, Caroline; Roy, Pierre-Alexis; Pelletier, Stefan; Dang, Lisa; Doyon, Rene; Benneke, Bjorn; Cowan, Nicolas B.; Darveau-Bernier, Antoine; Lim, Olivia; Artigau, Etienne; Johnstone, Doug; Kaltenegger, Lisa; Taylor, Jake; Flagg, Laura
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CRIRES+ and ESPRESSO Reveal an Atmosphere Enriched in Volatiles Relative to Refractories on the Ultrahot Jupiter WASP-121b
err2024-12-06
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errOAAI
errPelletier, Stefan; Benneke, Bjoern; Chachan, Yayaati; Bazinet, Luc; Allart, Romain; Hoeijmakers, H. Jens; Lavail, Alexis; Prinoth, Bibiana; Coulombe, Louis-Philippe; Lothringer, Joshua D.; Parmentier, Vivien; Smith, Peter; Borsato, Nicholas; Thorsbro, Brian
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The Roasting Marshmallows Program with IGRINS on Gemini South. II. WASP-121 b has Superstellar C/O and Refractory-to-volatile Ratios
err2024-12-02
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errOAAI
errSmith, Peter C. B.; Sanchez, Jorge A.; Line, Michael R.; Rauscher, Emily; Mansfield, Megan Weiner; Kempton, Eliza M. -R.; Savel, Arjun; Wardenier, Joost P.; Pino, Lorenzo; Bean, Jacob L.; Beltz, Hayley; Panwar, Vatsal; Brogi, Matteo; Malsky, Isaac; Fortney, Jonathan; Desert, Jean-Michel; Pelletier, Stefan; Parmentier, Vivien; Kanumalla, Sai Krishna Teja; Welbanks, Luis; Meyer, Michael; Monnier, John
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ESPRESSO reveals blueshifted neutral iron emission lines on the dayside of WASP-76 b
err2024-09-05
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errOAAI
errSilva, A. R. Costa; Demangeon, O. D. S.; Santos, N. C.; Ehrenreich, D.; Lovis, C.; Chakraborty, H.; Lendl, M.; Pepe, F.; Cristiani, S.; Rebolo, R.; Zapatero-Osorio, M. R.; Adibekyan, V.; Alibert, Y.; Allart, R.; Prieto, C. Allende; Silva, T. Azevedo; Borsa, F.; Bourrier, V.; Cristo, E.; Di Marcantonio, P.; Esparza-Borges, E.; Figueira, P.; Hernandez, J. I. Gonzalez; Herrero-Cisneros, E.; Curto, G. Lo; Martins, C. J. A. P.; Mehner, A.; Nunes, N. J.; Palle, E.; Pelletier, S.; Seidel, J. V.; Silva, A. M.; Sousa, S. G.; Sozzetti, A.; Steiner, M.; Mascareno, A. Suarez; Udry, S.
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Probing atmospheric escape through metastable He I triplet lines in 15 exoplanets observed with SPIRou
err2024-08-21
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errOAAI
errMasson, A.; Vinatier, S.; Bezard, B.; Lopez-Puertas, M.; Lampon, M.; Debras, F.; Carmona, A.; Klein, B.; Artigau, E.; Dethier, W.; Pelletier, S.; Hood, T.; Allart, R.; Bourrier, V.; Cadieux, C.; Charnay, B.; Cowan, N. B.; Cook, N. J.; Delfosse, X.; Donati, J. -F.; Gu, P. -G.; Hebrard, G.; Martioli, E.; Moutou, C.; Venot, O.; Wyttenbach, A.
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An atlas of resolved spectral features in the transmission spectrum of WASP-189 b with MAROON-X
err2024-05-03
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errOAAI
errPrinoth, B.; Hoeijmakers, H. J.; Morris, B. M.; Lam, M.; Kitzmann, D.; Sedaghati, E.; Seidel, J. V.; Lee, E. K. H.; Thorsbro, B.; Borsato, N. W.; Damasceno, Y. C.; Pelletier, S.; Seifahrt, A.
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Comprehensive High-resolution Chemical Spectroscopy of Barnard's Star with SPIRou
err2024-04-25
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errOAAI
errJahandar, Farbod; Doyon, Rene; Artigau, Etienne; Cook, Neil J.; Cadieux, Charles; Lafreniere, David; Forveille, Thierry; Donati, Jean-Francois; Fouque, Pascal; Carmona, Andres; Cloutier, Ryan; Cristofari, Paul; Gaidos, Eric; da Silva, Joao Gomes; Malo, Lison; Martioli, Eder; do Nascimento, J. -d.; Pelletier, Stefan; Vandal, Thomas; Venn, Kim
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A Subsolar Metallicity on the Ultra-short-period Planet HIP 65Ab
err2024-04-09
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errOAAI
errBazinet, Luc; Pelletier, Stefan; Benneke, Bjorn; Salinas, Ricardo; Mace, Gregory N.
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Muted Features in the JWST NIRISS Transmission Spectrum of Hot Neptune LTT 9779b
err2024-02-08
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errOAAI
errRadica, Michael; Coulombe, Louis-Philippe; Taylor, Jake; Albert, Loic; Allart, Romain; Benneke, Bjoern; Cowan, Nicolas B.; Dang, Lisa; Lafreniere, David; Thorngren, Daniel; Artigau, Etienne; Doyon, Rene; Flagg, Laura; Johnstone, Doug; Pelletier, Stefan; Roy, Pierre-Alexis
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Near-infrared transmission spectroscopy of HAT-P-18 b with NIRISS: Disentangling planetary and stellar features in the era of JWST
err2023-12-09
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errOAAI
errFournier-Tondreau, Marylou; MacDonald, Ryan J.; Radica, Michael; Lafreniere, David; Welbanks, Luis; Piaulet, Caroline; Coulombe, Louis-Philippe; Allart, Romain; Morel, Kim; Artigau, Etienne; Albert, Loic; Lim, Olivia; Doyon, Rene; Benneke, Bjorn; Rowe, Jason F.; Darveau-Bernier, Antoine; Cowan, Nicolas B.; Lewis, Nikole K.; Cook, Neil J.; Flagg, Laura; Genest, Frederic; Pelletier, Stefan; Johnstone, Doug; Dang, Lisa; Kaltenegger, Lisa; Taylor, Jake; Turner, Jake D.
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Time-resolved transmission spectroscopy of the ultra-hot Jupiter WASP-189 b
err2023-10-24
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errOAAI
errPrinoth, B.; Hoeijmakers, H. J.; Pelletier, S.; Kitzmann, D.; Morris, B. M.; Seifahrt, A.; Kasper, D.; Korhonen, H. H.; Burheim, M.; Bean, J. L.; Benneke, B.; Borsato, N. W.; Brady, M.; Grimm, S. L.; Luque, R.; Stuermer, J.; Thorsbro, B.
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Homogeneous search for helium in the atmosphere of 11 gas giant exoplanets with SPIRou
err2023-09-22
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errOAAI
errAllart, R.; Lemee-Joliecoeur, P. -B.; Jaziri, A. Y.; Lafreniere, D.; Artigau, E.; Cook, N.; Darveau-Bernier, A.; Dang, L.; Cadieux, C.; Boucher, A.; Bourrier, V.; Deibert, E. K.; Pelletier, S.; Radica, M.; Benneke, B.; Carmona, A.; Cloutier, R.; Cowan, N. B.; Delfosse, X.; Donati, J. -F.; Doyon, R.; Figueira, P.; Forveille, T.; Fouque, P.; Gaidos, E.; Gu, P. -G.; Hebrard, G.; Kiefer, F.; Kospal, A.; Jayawardhana, R.; Martioli, E.; Dos Santos, L. A.; Shang, H.; Turner, J. D.; Vidotto, A. A.
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Awesome SOSS: transmission spectroscopy of WASP-96b with NIRISS/SOSS
err2023-06-14
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errOAAI
errRadica, Michael; Welbanks, Luis; Espinoza, Nestor; Taylor, Jake; Coulombe, Louis-Philippe; Feinstein, Adina D.; Goyal, Jayesh; Scarsdale, Nicholas; Albert, Loic; Baghel, Priyanka; Bean, Jacob L.; Blecic, Jasmina; Lafreniere, David; MacDonald, Ryan J.; Zamyatina, Maria; Allart, Romain; Artigau, Etienne; Batalha, Natasha E.; Cook, Neil James; Cowan, Nicolas B.; Dang, Lisa; Doyon, Rene; Fournier-Tondreau, Marylou; Johnstone, Doug; Line, Michael R.; Moran, Sarah E.; Mukherjee, Sagnick; Pelletier, Stefan; Roy, Pierre-Alexis; Talens, Geert Jan; Filippazzo, Joseph; Pontoppidan, Klaus; Volk, Kevin
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