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Ryan J. MacDonald

university of st andrews

38H-index
328Paper Count
5.2KCitation Count
Published Papers 86
Publication Date
Aerosols and hydrocarbons in the atmosphere of a white dwarf planet
errNature
IF48.5
err2026-07-01
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errOAAI
errRyan J. MacDonald; Christopher E. O’Connor; Victoria A. Boehm; E. M. May; David K. Sing; Elijah Mullens; L. C. Mayorga; Trevor O. Foote; Simon Blouin; Logan A. Pearce; Nikole K. Lewis; Jeff Valenti; Natasha E. Batalha; Maura Lally; Joshua D. Lothringer; Mark S. Marley; Ishan Mishra; Susan E. Mullally
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Supersolar Metallicity and Tentative Evidence for Photochemistry on WASP-96 b from JWST and Ground-based VLT Transmission Spectroscopy
err2026-04-27
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errOAAI
errMichael Radica; Jake Taylor; Yoav Rotman; Jasmina Blecic; Luis Welbanks; Eva-Maria Ahrer; Duncan Christie; Louis-Philippe Coulombe; Gillis Lowry; Matthew M. Murphy; Adina D. Feinstein; David Lafrenière; Ryan J. MacDonald; Nathan J. Mayne; Shang-Min Tsai; Maria Zamyatina
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Exomoons and Exorings with the Habitable Worlds Observatory. II. Finding “Endor” with Lunar Eclipses
err2026-03-03
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errOAAI
errMary Anne Limbach; Beck Dacus; Brooke Kotten; Elizabeth Lane; Jacob Lustig-Yaeger; Ryan MacDonald; Tyler D. Robinson; Jean-Baptiste Ruffio; Andrew Vanderburg
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JWST TRAPPIST-1 e/b Program: Motivation and First Observations
err2026-01-22
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errOAAI
errNatalie H. Allen; Néstor Espinoza; V. A. Boehm; Caleb I. Cañas; Kevin B. Stevenson; Nikole K. Lewis; Ryan J. MacDonald; Brett M. Morris; Eric Agol; Knicole Colón; Hannah Diamond-Lowe; Ana Glidden; Amélie Gressier; Jingcheng Huang; Zifan Lin; Douglas Long; Dana R. Louie; Meredith A. MacGregor; Laurent Pueyo; Benjamin V. Rackham; Sukrit Ranjan; Sara Seager; Guadalupe Tovar Mendoza; Jeff A. Valenti; Daniel Valentine; Roeland P. van der Marel; Hannah R. Wakeford
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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 Comprehensive Reanalysis of K2-18 b's JWST NIRISS plus NIRSpec Transmission Spectrum
err2025-12-01
err3
PREAI
errSchmidt, Stephen P.; Macdonald, Ryan J.; Tsai, Shang-Min; Radica, Michael; Wang, Le-Chris; Ahrer, Eva-Maria; Bell, Taylor J.; Fisher, Chloe; Thorngren, Daniel P.; Wogan, Nicholas; May, Erin M.; Ferrari, Piero; Bennett, Katherine A.; Rustamkulov, Zafar; Lopez-Morales, Mercedes; Sing, David K.
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Ross 458 C: Gas Giant or Brown Dwarf?
err2025-11-28
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errOAAI
errWilliam W. Meynardie; Michael R. Meyer; Ryan J. MacDonald; Per Calissendorff; Elijah Mullens; Gabriel Munoz Zarazua; Anuranj Roy; Hansica Ganta; Eileen C. Gonzales; Arthur Adams; Nikole Lewis; Yucian Hong; Jonathan Lunine
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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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JWST-TST DREAMS: Sulfur Dioxide in the Atmosphere of the Neptune-mass Planet HAT-P-26 b from NIRSpec G395H Transmission Spectroscopy
err2025-11-03
err2
PREAI
errGressier, Amelie; Batalha, Natasha E.; Wogan, Nicholas; Alderson, Lili; Doud, Dominic; Espinoza, Nestor; Macdonald, Ryan J.; Wakeford, Hannah R.; Valenti, Jeff A.; Lewis, Nikole K.; Seager, Sara; Stevenson, Kevin B.; Allen, Natalie H.; Canas, Caleb I.; Challener, Ryan C.; Glidden, Ana; Huang, Jingcheng; Lin, Zifan; Louie, Dana R.; Maguire, Cathal; Mullens, Elijah; Sotzen, Kristin; Valentine, Daniel; Clampin, Mark; Pueyo, Laurent; Van Der Marel, Roeland P.; Mountain, C. Matt
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The Wolverine Project: Evaluating Cumulative Effects Within the Land of Ktunaxa Using the One Heart Method
err2025-09-20
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errOAAI
errNikki Heim; Ryan MacDonald; Christopher Horsethief; Chad Luke; Michael Proctor; Marlene Machmer; Vi Birdstone; Ray Warden; Curtis Wullum; Rachel Plewes; Matthew Chernos; Matt Carlson
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Additional JWST/NIRSpec Transits of the Rocky M Dwarf Exoplanet GJ 1132 b Reveal a Featureless Spectrum
err2025-09-09
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errOAAI
errKatherine A. Bennett; Ryan J. MacDonald; Sarah Peacock; Junellie Perez; E. M. May; Sarah E. Moran; Lili Alderson; Jacob Lustig-Yaeger; Hannah R. Wakeford; David K. Sing; Kevin B. Stevenson; Natasha E. Batalha; Mercedes López-Morales; Munazza K. Alam; Joshua D. Lothringer; Guangwei Fu; James Kirk; Jeff A. Valenti; L. C. Mayorga; Kristin S. Sotzen
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JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e
err2025-09-08
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errOAAI
errAna Glidden; Sukrit Ranjan; Sara Seager; Néstor Espinoza; Ryan J. MacDonald; Natalie H. Allen; Caleb I. Cañas; David Grant; Amélie Gressier; Kevin B. Stevenson; Natasha E. Batalha; Nikole K. Lewis; Douglas Long; Hannah R. Wakeford; Lili Alderson; Ryan C. Challener; Knicole Colón; Jingcheng Huang; Zifan Lin; Dana R. Louie; Elijah Mullens; Kristin S. Sotzen; Jeff A. Valenti; Daniel Valentine; Mark Clampin; C. Matt Mountain; Marshall Perrin; Roeland P. van der Marel
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JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e
err2025-09-08
err0
errOAAI
errNéstor Espinoza; Natalie H. Allen; Ana Glidden; Nikole K. Lewis; Sara Seager; Caleb I. Cañas; David Grant; Amélie Gressier; Shelby Courreges; Kevin B. Stevenson; Sukrit Ranjan; Knicole Colón; Brett M. Morris; Ryan J. MacDonald; Douglas Long; Hannah R. Wakeford; Jeff A. Valenti; Lili Alderson; Natasha E. Batalha; Ryan C. Challener; Jingcheng Huang; Zifan Lin; Dana R. Louie; Elijah Mullens; Daniel Valentine; C. Matt Mountain; Laurent Pueyo; Marshall D. Perrin; Andrea Bellini; Jens Kammerer; Mattia Libralato; Isabel Rebollido; Emily Rickman; Sangmo Tony Sohn; Roeland P. van der Marel
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The HUSTLE Program: The UV to Near-IR Transmission Spectrum of the Hot Jupiter KELT-7b
err2025-08-21
err0
PREAI
errC. Gascón; M. López-Morales; R. J. MacDonald; J. K. Barstow; V. A. Boehm; H. R. Wakeford; M. K. Alam; L. Alderson; N. E. Batalha; C. E. Fairman; D. Grant; N. K. Lewis; M. S. Marley; S. E. Moran; K. Ohno; G. Anglada-Escudé; I. Ribas
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Strict Limits on Potential Secondary Atmospheres on the Temperate Rocky Exo-Earth TRAPPIST-1 d
err2025-08-13
err0
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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Open-source High-resolution Exoplanet Atmosphere Retrievals with POSEIDON
err2025-05-22
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errOAAI
errWang, Ruizhe; MacDonald, Ryan J.; Gibson, Neale P.; Lewis, Nikole K.
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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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errOAAI
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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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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Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534 b
err2025-04-30
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errOAAI
errLimbach, Mary Anne; Vanderburg, Andrew; MacDonald, Ryan J.; Stevenson, Kevin B.; Jenkins, Sydney; Blouin, Simon; Rauscher, Emily; Bowens-Rubin, Rachel; Gallo, Elena; Mang, James; Morley, Caroline V.; Sing, David K.; O'Connor, Christopher; Venner, Alexander; Xu, Siyi
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An HST Transmission Spectrum of the Closest M Dwarf Transiting Rocky Planet LTT 1445Ab
err2025-02-03
err0
errOAAI
errBennett, Katherine A.; Sing, David K.; Stevenson, Kevin B.; Wakeford, Hannah R.; Rustamkulov, Zafar; Allen, Natalie H.; Lothringer, Joshua D.; Macdonald, Ryan J.; Mayne, Nathan J.; Fu, Guangwei
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