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Romain Allart

Université de Montréal

40H-index
197Paper Count
5.0KCitation Count
Published Papers 86
Publication Date
Diversity in the haziness and chemistry of temperate sub-Neptunes
err2025-12-12
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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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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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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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Possible Evidence for the Presence of Volatiles on the Warm Super-Earth TOI-270 b
err2025-09-17
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errLouis-Philippe Coulombe; Björn Benneke; Joshua Krissansen-Totton; Alexandrine L’Heureux; Caroline Piaulet-Ghorayeb; Michael Radica; Pierre-Alexis Roy; Eva-Maria Ahrer; Charles Cadieux; Yamila Miguel; Hilke E. Schlichting; Elisa Delgado-Mena; Christopher Monaghan; Hanna Adamski; Eshan Raul; Ryan Cloutier; Thaddeus D. Komacek; Jake Taylor; Cyril Gapp; Romain Allart; François Bouchy; Bruno L. Canto Martins; Neil J. Cook; René Doyon; Thomas M. Evans-Soma; Pierre Larue; Alejandro Suárez Mascareño; Joost P. Wardenier
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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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Escaping Helium and a Highly Muted Spectrum Suggest a Metal-enriched Atmosphere on Sub-Neptune GJ 3090 b from JWST Transit Spectroscopy
err2025-05-15
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errAhrer, Eva-Maria; Radica, Michael; Piaulet-Ghorayeb, Caroline; Raul, Eshan; Wiser, Lindsey; Welbanks, Luis; Acuna, Lorena; Allart, Romain; Coulombe, Louis-Philippe; Louca, Amy; MacDonald, Ryan; Saidel, Morgan; Evans-Soma, Thomas M.; Benneke, Bjorn; Christie, Duncan; Beatty, Thomas G.; Cadieux, Charles; Cloutier, Ryan; Doyon, Rene; Fortney, Jonathan J.; Gagnebin, Anna; Gapp, Cyril; Innes, Hamish; Knutson, Heather A.; Komacek, Thaddeus; Krissansen-Totton, Joshua; Miguel, Yamila; Pierrehumbert, Raymond; Roy, Pierre-Alexis; Schlichting, Hilke E.
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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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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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Constraining the scattered light properties of LTT 9779 b using HST/WFC3 UVIS
err2025-03-20
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errRadica, Michael; Taylor, Jake; Wakeford, Hannah R.; Lafreniere, David; Allart, Romain; Cowan, Nicolas B.; Jenkins, James S.; Parmentier, Vivien
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Titanium chemistry of WASP-121 b with ESPRESSO in 4-UT mode
err2025-02-19
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errPrinoth, B.; Seidel, J. V.; Hoeijmakers, H. J.; Morris, B. M.; Baratella, M.; Borsato, N. W.; Damasceno, Y. C.; Parmentier, V.; Kitzmann, D.; Sedaghati, E.; Pino, L.; Borsa, F.; Allart, R.; Santos, N.; Steiner, M.; Mascareno, A. Suarez; Tabernero, H.; Osorio, M. R. Zapatero
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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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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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Measuring Sub-Kelvin Variations in Stellar Temperature with High-resolution Spectroscopy
err2024-11-12
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errArtigau, Etienne; Cadieux, Charles; Cook, Neil J.; Doyon, Rene; Dauplaise, Laurie; Arnold, Luc; Cadieux, Maya; Donati, Jean-Francois; Cristofari, Paul; Delfosse, Xavier; Fouque, Pascal; Moutou, Claire; Larue, Pierre; Allart, Romain
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The ANTARESS workflow : I. Optimal extraction of spatially resolved stellar spectra with high-resolution transit spectroscopy
err2024-11-05
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errBourrier, V.; Delisle, J. -B.; Lovis, C.; Cegla, H. M.; Cretignier, M.; Allart, R.; Al Moulla, K.; Tavella, S.; Attia, O.; Mounzer, D.; Vaulato, V.; Steiner, M.; Vrignaud, T.; Mercier, S.; Dumusque, X.; Ehrenreich, D.; Seidel, J. V.; Wyttenbach, A.; Dethier, W.; Pepe, F.
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The obliquity and atmosphere of the hot Jupiter WASP-122b (KELT-14b) with ESPRESSO: An aligned orbit and no sign of atomic or molecular absorption
err2024-11-01
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PREAI
errStangret, M.; Palle, E.; Esparza-Borges, E.; Orell Miquel, J.; Casasayas-Barris, N.; Zapatero Osorio, M. R.; Cristo, E.; Allart, R.; Alibert, Y.; Borsa, F.; Demangeon, O. D. S.; Di Marcantonio, P.; Ehrenreich, D.; Figueira, P.; Gonzalez Hernandez, J. I.; Herrero-Cisneros, E.; Martins, C. J. A. P.; Santos, N. C.; Seidel, J. V.; Azevedo Silva, T.; Sozzetti, A.; Steiner, M.; Suarez Mascareno, A.; Udry, S.
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JWST/NIRISS Reveals the Water-rich Steam World Atmosphere of GJ 9827 d
err2024-10-04
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errPiaulet-Ghorayeb, Caroline; Benneke, Bjoern; Radica, Michael; Raul, Eshan; Coulombe, Louis-Philippe; Ahrer, Eva-Maria; Kubyshkina, Daria; Howard, Ward S.; Krissansen-Totton, Joshua; MacDonald, Ryan J.; Roy, Pierre-Alexis; Louca, Amy; Christie, Duncan; Fournier-Tondreau, Marylou; Allart, Romain; Miguel, Yamila; Schlichting, Hilke E.; Welbanks, Luis; Cadieux, Charles; Dorn, Caroline; Evans-Soma, Thomas M.; Fortney, Jonathan J.; Pierrehumbert, Raymond; Lafreniere, David; Acuna, Lorena; Komacek, Thaddeus; Innes, Hamish; Beatty, Thomas G.; Cloutier, Ryan; Doyon, Rene; Gagnebin, Anna; Gapp, Cyril; Knutson, Heather A.
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A sub-Earth-mass planet orbiting Barnard's star*
err2024-10-01
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errHernandez, J. I. Gonzalez; Mascareno, A. Suarez; Silva, A. M.; Stefanov, A. K.; Faria, J. P.; Tabernero, H. M.; Sozzetti, A.; Rebolo, R.; Pepe, F.; Santos, N. C.; Cristiani, S.; Lovis, C.; Dumusque, X.; Figueira, P.; Lillo-Box, J.; Nari, N.; Benatti, S.; Hobson, M. J.; Castro-Gonzalez, A.; Allart, R.; Passegger, V. M.; Osorio, M. -r. Zapatero; Adibekyan, V.; Alibert, Y.; Prieto, C. Allende; Bouchy, F.; Damasso, M.; D'Odorico, V.; Di Marcantonio, P.; Ehrenreich, D.; Lo Curto, G.; Santos, R. Genova; Martins, C. J. A. P.; Mehner, A.; Micela, G.; Molaro, P.; Nunes, N.; Palle, E.; Sousa, S. G.; Udry, S.
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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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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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The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO
err2024-09-02
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errDamasceno, Y. C.; Seidel, J. V.; Prinoth, B.; Psaridi, A.; Esparza-Borges, E.; Stangret, M.; Santos, N. C.; Zapatero-Osorio, M. R.; Alibert, Y.; Allart, R.; Silva, T. Azevedo; Cointepas, M.; Silva, A. R. Costa; Cristo, E.; Di Marcantonio, P.; Ehrenreich, D.; Hernandez, J. I. Gonzalez; Herrero-Cisneros, E.; Lendl, M.; Lillo-Box, J.; Martins, C. J. A. P.; Micela, G.; Palle, E.; Sousa, S. G.; Steiner, M.; Vaulato, V.; Zhao, Y.; Pepe, F.
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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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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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Nondetections of Helium in the Young Sub-Jovian Planets K2-100b, HD 63433b, and V1298 Tau c
err2024-08-01
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errAlam, Munazza K.; Kirk, James; Dos Santos, Leonardo A.; McCreery, Patrick; Allan, Andrew P.; Owen, James E.; Vidotto, Aline A.; Allart, Romain; Bourrier, Vincent; Espinoza, Nestor; King, George W.; Lopez-Morales, Mercedes; Seidel, Julia V.
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