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Joanna Barstow on Muck Rack

Joanna Barstow

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Articles

The first water vapour detection and exoplanet atmosphere characterization - Nature Astronomy

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By Joanna Barstow
| Nature Verified
Water is ubiquitous in the atmospheres of hot and warm exoplanets. Detecting, quantifying and mapping atmospheric water has revealed a great deal about dynamical and chemical processes on distant worlds.
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A warm Neptune’s methane reveals core mass and vigorous atmospheric mixing - Nature

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By David K. Sing, Zafar Rustamkulov, Joanna Barstow, Pascal Tremblin, Stephan M. Birkmann, Nicolas Crouzet, Néstor Espinoza, Pierre Ferruit, Roberto Maiolino, Bernard J. Rauscher, Marco Sirianni
| Nature Verified
Abstract Observations of transiting gas giant exoplanets have revealed a pervasive depletion of methane1,2,3,4, which has only recently been identified atmospherically5,6. The depletion is thought to be maintained by disequilibrium processes such as photochemistry or mixing from a hotter interior7,8,9. However, the interiors are largely unconstrained along with the vertical mixing strength and only upper limits on the CH4 depletion have been available.
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Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b - Nature Astronomy

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By Taylor Bell, Nicolas Crouzet, Michael Roman, Joanna Barstow, Ludmila Carone, Louis-Philippe Coulombe, Elsa Ducrot, Julianne I. Moses, Kevin Stevenson, Björn Benneke, Giuseppe Morello, Emily A. Rauscher, David K. Sing, Olivia Venot, Hannah Wakeford, Keshav Aggarwal, Munazza Alam, David Barrado, Claudio Caceres, Leen Decin, Joseph W. Harrington, Renyu Hu, Eliza M.-R. Kempton, Thaddeus D. Komacek, Isaac Malsky, Luigi Mancini, Megan Mansfield, Nathan Mayne, Karan Molaverdikhani, Nikolay Nikolov Verified, Matthew Nixon, Enric Pallé, Caroline Piaulet, Benjamin Rackham, Aaron Schneider, Maria E. Steinrueck, Luis Welbanks, Sergei N. Yurchenko, Xi Zhang, Lucas Teinturier, Robin Baeyens, Monika Lendl, Thomas M. Evans-Soma
| Nature Verified
Abstract Hot Jupiters are among the best-studied exoplanets, but it is still poorly understood how their chemical composition and cloud properties vary with longitude. Theoretical models predict that clouds may condense on the nightside and that molecular abundances can be driven out of equilibrium by zonal winds. Here we report a phase-resolved emission spectrum of the hot Jupiter WASP-43b measured from 5 μm to 12 μm with the JWST’s Mid-Infrared Instrument.
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