Exoplanet atmospheres

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Early Release Science of the exoplanet WASP-39b with JWST NIRISS

Nature Springer Nature 614:7949 (2023) 670-675

Authors:

Adina D Feinstein, Michael Radica, Luis Welbanks, Catriona Anne Murray, Kazumasa Ohno, Louis-Philippe Coulombe, N茅stor Espinoza, Jacob L Bean, Johanna K Teske, Bj枚rn Benneke, Michael R Line, Zafar Rustamkulov, Arianna Saba, Angelos Tsiaras, Joanna K Barstow, Jonathan J Fortney, Peter Gao, Heather A Knutson, Ryan J MacDonald, Thomas Mikal-Evans, Benjamin V Rackham, Jake Taylor, Vivien Parmentier, Natalie M Batalha, Zachory K Berta-Thompson, Aarynn L Carter, Quentin Changeat, Leonardo A dos Santos, Neale P Gibson, Jayesh M Goyal, Laura Kreidberg, Mercedes L贸pez-Morales, Joshua D Lothringer, Yamila Miguel, Karan Molaverdikhani, Sarah E Moran, Giuseppe Morello, Sagnick Mukherjee, David K Sing, Kevin B Stevenson, Hannah R Wakeford, Eva-Maria Ahrer, Munazza K Alam, Lili Alderson, Natalie H Allen, Natasha E Batalha, Taylor J Bell, Jasmina Blecic, Jonathan Brande, Claudio Caceres, SL Casewell, Katy L Chubb, Ian JM Crossfield, Nicolas Crouzet, Patricio E Cubillos, Leen Decin, Jean-Michel D茅sert, Joseph Harrington, Kevin Heng, Thomas Henning, Nicolas Iro, Eliza M-R Kempton, Sarah Kendrew, James Kirk, Jessica Krick, Pierre-Olivier Lagage, Monika Lendl, Luigi Mancini, Megan Mansfield, EM May, NJ Mayne, Nikolay K Nikolov, Enric Palle, Dominique JM Petit dit de la Roche, Caroline Piaulet, Diana Powell, Seth Redfield, Laura K Rogers, Michael T Roman, Pierre-Alexis Roy, Matthew C Nixon, Everett Schlawin, Xianyu Tan, P Tremblin, Jake D Turner, Olivia Venot, William C Waalkes, Peter J Wheatley, Xi Zhang

Early Release Science of the exoplanet WASP-39b with JWST NIRSpec G395H

Nature Springer Nature 614:7949 (2023) 664-669

Authors:

Lili Alderson, Hannah R Wakeford, Munazza K Alam, Natasha E Batalha, Joshua D Lothringer, Jea Adams Redai, Saugata Barat, Jonathan Brande, Mario Damiano, Tansu Daylan, N茅stor Espinoza, Laura Flagg, Jayesh M Goyal, David Grant, Renyu Hu, Julie Inglis, Elspeth KH Lee, Thomas Mikal-Evans, Lakeisha Ramos-Rosado, Pierre-Alexis Roy, Nicole L Wallack, Natalie M Batalha, Jacob L Bean, Bj枚rn Benneke, Zachory K Berta-Thompson, Aarynn L Carter, Quentin Changeat, Knicole D Col贸n, Ian JM Crossfield, Jean-Michel D茅sert, Daniel Foreman-Mackey, Neale P Gibson, Laura Kreidberg, Michael R Line, Mercedes L贸pez-Morales, Karan Molaverdikhani, Sarah E Moran, Giuseppe Morello, Julianne I Moses, Sagnick Mukherjee, Everett Schlawin, David K Sing, Kevin B Stevenson, Jake Taylor, Keshav Aggarwal, Eva-Maria Ahrer, Natalie H Allen, Joanna K Barstow, Taylor J Bell, Jasmina Blecic, Sarah L Casewell, Katy L Chubb, Nicolas Crouzet, Patricio E Cubillos, Leen Decin, Adina D Feinstein, Joanthan J Fortney, Joseph Harrington, Kevin Heng, Nicolas Iro, Eliza M-R Kempton, James Kirk, Heather A Knutson, Jessica Krick, J茅r茅my Leconte, Monika Lendl, Ryan J MacDonald, Luigi Mancini, Megan Mansfield, Erin M May, Nathan J Mayne, Yamila Miguel, Nikolay K Nikolov, Kazumasa Ohno, Enric Palle, Vivien Parmentier, Dominique JM Petit dit de la Roche, Caroline Piaulet, Diana Powell, Benjamin V Rackham, Seth Redfield, Laura K Rogers, Zafar Rustamkulov, Xianyu Tan, P Tremblin, Shang-Min Tsai, Jake D Turner, Miguel de Val-Borro, Olivia Venot, Luis Welbanks, Peter J Wheatley, Xi Zhang

Identification of carbon dioxide in an exoplanet atmosphere

Nature Springer Nature 614:7949 (2023) 649-652

Measuring the variability of directly imaged exoplanets using vector Apodizing Phase Plates combined with ground-based differential spectrophotometry

Monthly Notices of the Royal Astronomical Society 91探花 University Press (OUP) 520:3 (2023) 4235-4257

Authors:

Ben J Sutlieff, Jayne L Birkby, Jordan M Stone, David S Doelman, Matthew A Kenworthy, Vatsal Panwar, Alexander J Bohn, Steve Ertel, Frans Snik, Charles E Woodward, Andrew J Skemer, Jarron M Leisenring, Klaus G Strassmeier, David Charbonneau

The Runaway Greenhouse on Sub-Neptune Waterworlds

The Astrophysical Journal American Astronomical Society 944:1 (2023) 20-20

Abstract:

<jats:title>Abstract</jats:title> <jats:p>The implications of the water vapor runaway greenhouse phenomenon for water-rich sub-Neptunes are developed. In particular, the nature of the postrunaway equilibration process for planets that have an extremely high water inventory is addressed. Crossing the threshold from subrunaway to superrunaway conditions leads to a transition from equilibrated states with cold, deep liquid oceans and deep interior ice-X phases to states with hot supercritical fluid interiors. There is a corresponding marked inflation of radius for a given mass, similar to the runaway greenhouse radius inflation effect noted earlier for terrestrial planets, but in the present case the inflation involves the entire interior of the planet. The calculation employs the AQUA equation-of-state database to simplify the internal structure calculation. Some speculations concerning the effect of H<jats:sub>2</jats:sub> admixture, silicate cores, and hot- versus cold-start evolution trajectories are offered. Observational implications are discussed though the search for the mass鈥搑adius signature of the phenomena considered is limited by degeneracies and by lack of data.</jats:p>