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Shreyas Vissapragada, Gudmundur Stefánsson, Michael Greklek-McKeon, Antonija Oklopčić, Heather A. Knutson, Joe P. Ninan, Suvrath Mahadevan, Caleb I. Cañas, Yayaati Chachan, William D. Cochran, Karen A. Collins, Fei Dai, Trevor J. David, Samuel Halverson, Suzanne L. Hawley, Leslie Hebb, Shubham Kanodia, Adam F. Kowalski, John H. Livingston, Marissa Maney, Andrew J. Metcalf, Caroline Morley, Lawrence W. Ramsey, Paul Robertson, Arpita Roy, et al.
The Astronomical Journal 162 (5) 222 (2021)
https://doi.org/10.3847/1538-3881/ac1bb0

Hot Jupiters: Origins, Structure, Atmospheres

Jonathan J. Fortney, Rebekah I. Dawson and Thaddeus D. Komacek
Journal of Geophysical Research: Planets 126 (3) (2021)
https://doi.org/10.1029/2020JE006629

Modelling the He I triplet absorption at 10 830 Å in the atmospheres of HD 189733 b and GJ 3470 b

M. Lampón, M. López-Puertas, J. Sanz-Forcada, et al.
Astronomy & Astrophysics 647 A129 (2021)
https://doi.org/10.1051/0004-6361/202039417

Time-resolved Rotational Velocities in the Upper Atmosphere of WASP-33 b*

P. Wilson Cauley, Ji Wang, Evgenya L. Shkolnik, Ilya Ilyin, Klaus G. Strassmeier, Seth Redfield and Adam G. Jensen
The Astronomical Journal 161 (3) 152 (2021)
https://doi.org/10.3847/1538-3881/abde43

Nondetection of Helium in the Upper Atmospheres of TRAPPIST-1b, e, and f*

Vigneshwaran Krishnamurthy, Teruyuki Hirano, Gumundur Stefánsson, Joe P. Ninan, Suvrath Mahadevan, Eric Gaidos, Ravi Kopparapu, Bunei Sato, Yasunori Hori, Chad F. Bender, Caleb I. Cañas, Scott A. Diddams, Samuel Halverson, Hiroki Harakawa, Suzanne Hawley, Fred Hearty, Leslie Hebb, Klaus Hodapp, Shane Jacobson, Shubham Kanodia, Mihoko Konishi, Takayuki Kotani, Adam Kowalski, Tomoyuki Kudo, Takashi Kurokawa, et al.
The Astronomical Journal 162 (3) 82 (2021)
https://doi.org/10.3847/1538-3881/ac0d57

The impact of intrinsic magnetic field on the absorption signatures of elements probing the upper atmosphere of HD209458b

M L Khodachenko, I F Shaikhislamov, H Lammer, et al.
Monthly Notices of the Royal Astronomical Society 507 (3) 3626 (2021)
https://doi.org/10.1093/mnras/stab2366

Constraints on the mass and on the atmospheric composition and evolution of the low-density young planet DS Tucanae A b

S. Benatti, M. Damasso, F. Borsa, et al.
Astronomy & Astrophysics 650 A66 (2021)
https://doi.org/10.1051/0004-6361/202140416

CARMENES detection of the Ca II infrared triplet and possible evidence of He I in the atmosphere of WASP-76b

N. Casasayas-Barris, J. Orell-Miquel, M. Stangret, et al.
Astronomy & Astrophysics 654 A163 (2021)
https://doi.org/10.1051/0004-6361/202141669

Characterizing Exoplanetary Atmospheres at High Resolution with SPIRou: Detection of Water on HD 189733 b

Anne Boucher, Antoine Darveau-Bernier, Stefan Pelletier, David Lafrenière, Étienne Artigau, Neil J. Cook, Romain Allart, Michael Radica, René Doyon, Björn Benneke, Luc Arnold, Xavier Bonfils, Vincent Bourrier, Ryan Cloutier, João Gomes da Silva, Emily Deibert, Xavier Delfosse, Jean-François Donati, David Ehrenreich, Pedro Figueira, Thierry Forveille, Pascal Fouqué, Jonathan Gagné, Eric Gaidos, Guillaume Hébrard, et al.
The Astronomical Journal 162 (6) 233 (2021)
https://doi.org/10.3847/1538-3881/ac1f8e

TOI-2109: An Ultrahot Gas Giant on a 16 hr Orbit

Ian Wong, Avi Shporer, George Zhou, Daniel Kitzmann, Thaddeus D. Komacek, Xianyu Tan, René Tronsgaard, Lars A. Buchhave, Shreyas Vissapragada, Michael Greklek-McKeon, Joseph E. Rodriguez, John P. Ahlers, Samuel N. Quinn, Elise Furlan, Steve B. Howell, Allyson Bieryla, Kevin Heng, Heather A. Knutson, Karen A. Collins, Kim K. McLeod, Perry Berlind, Peyton Brown, Michael L. Calkins, Jerome P. de Leon, Emma Esparza-Borges, et al.
The Astronomical Journal 162 (6) 256 (2021)
https://doi.org/10.3847/1538-3881/ac26bd

Assessing telluric correction methods for Na detections with high-resolution exoplanet transmission spectroscopy

Adam B Langeveld, Nikku Madhusudhan, Samuel H C Cabot and Simon T Hodgkin
Monthly Notices of the Royal Astronomical Society 502 (3) 4392 (2021)
https://doi.org/10.1093/mnras/stab134

H-alpha and Ca ii Infrared Triplet Variations During a Transit of the 23 Myr Planet V1298 Tau c

Adina D. Feinstein, Benjamin T. Montet, Marshall C. Johnson, Jacob L. Bean, Trevor J. David, Michael A. Gully-Santiago, John H. Livingston and Rodrigo Luger
The Astronomical Journal 162 (5) 213 (2021)
https://doi.org/10.3847/1538-3881/ac1f24

Kinetic Isotope Effect in Low-Energy Collisions between Hydrogen Isotopologues and Metastable Helium Atoms: Theoretical Calculations Including the Vibrational Excitation of the Molecule

Mariusz Pawlak, Piotr S. Żuchowski and Piotr Jankowski
Journal of Chemical Theory and Computation 17 (2) 1008 (2021)
https://doi.org/10.1021/acs.jctc.0c01122

The Dark World: A Tale of WASP-43b in Reflected Light with HST WFC3/UVIS

Jonathan Fraine, L. C. Mayorga, Kevin B. Stevenson, Nikole K. Lewis, Tiffany Kataria, Jacob L. Bean, Giovanni Bruno, Jonathan J. Fortney, Laura Kreidberg, Caroline V. Morley, Nelly C Mouawad, Kamen O. Todorov, Vivien Parmentier, Hannah Wakeford, Y. Katherina Feng, Brian M. Kilpatrick and Michael R. Line
The Astronomical Journal 161 (6) 269 (2021)
https://doi.org/10.3847/1538-3881/abe8d6

VPLanet: The Virtual Planet Simulator

Rory Barnes, Rodrigo Luger, Russell Deitrick, et al.
Publications of the Astronomical Society of the Pacific 132 (1008) 024502 (2020)
https://doi.org/10.1088/1538-3873/ab3ce8

WASP-127b: a misaligned planet with a partly cloudy atmosphere and tenuous sodium signature seen by ESPRESSO

R. Allart, L. Pino, C. Lovis, et al.
Astronomy & Astrophysics 644 A155 (2020)
https://doi.org/10.1051/0004-6361/202039234

Modelling the He I triplet absorption at 10 830 Å in the atmosphere of HD 209458 b

M. Lampón, M. López-Puertas, L. M. Lara, et al.
Astronomy & Astrophysics 636 A13 (2020)
https://doi.org/10.1051/0004-6361/201937175

Zodiacal exoplanets in time – X. The orbit and atmosphere of the young ‘neptune desert’-dwelling planet K2-100b

E Gaidos, T Hirano, A W Mann, et al.
Monthly Notices of the Royal Astronomical Society 495 (1) 650 (2020)
https://doi.org/10.1093/mnras/staa918

Mass-loss rate and local thermodynamic state of the KELT-9 b thermosphere from the hydrogen Balmer series

A. Wyttenbach, P. Mollière, D. Ehrenreich, et al.
Astronomy & Astrophysics 638 A87 (2020)
https://doi.org/10.1051/0004-6361/201937316

A Search for FeH in Hot-Jupiter Atmospheres with High-dispersion Spectroscopy

Aurora Y. Kesseli, I. A. G. Snellen, F. J. Alonso-Floriano, P. Mollière and D. B. Serindag
The Astronomical Journal 160 (5) 228 (2020)
https://doi.org/10.3847/1538-3881/abb59c

Mass determinations of the three mini-Neptunes transiting TOI-125

L D Nielsen, D Gandolfi, D J Armstrong, et al.
Monthly Notices of the Royal Astronomical Society 492 (4) 5399 (2020)
https://doi.org/10.1093/mnras/staa197

An Unusual Transmission Spectrum for the Sub-Saturn KELT-11b Suggestive of a Subsolar Water Abundance

Knicole D. Colón, Laura Kreidberg, Luis Welbanks, Michael R. Line, Nikku Madhusudhan, Thomas Beatty, Patrick Tamburo, Kevin B. Stevenson, Avi Mandell, Joseph E. Rodriguez, Thomas Barclay, Eric D. Lopez, Keivan G. Stassun, Daniel Angerhausen, Jonathan J. Fortney, David J. James, Joshua Pepper, John P. Ahlers, Peter Plavchan, Supachai Awiphan, Cliff Kotnik, Kim K. McLeod, Gabriel Murawski, Heena Chotani, Danny LeBrun, et al.
The Astronomical Journal 160 (6) 280 (2020)
https://doi.org/10.3847/1538-3881/abc1e9

Nondetection of Helium in the Upper Atmospheres of Three Sub-Neptune Exoplanets

David Kasper, Jacob L. Bean, Antonija Oklopčić, Isaac Malsky, Eliza M.-R. Kempton, Jean-Michel Désert, Leslie A. Rogers and Megan Mansfield
The Astronomical Journal 160 (6) 258 (2020)
https://doi.org/10.3847/1538-3881/abbee6

Constraints on Metastable Helium in the Atmospheres of WASP-69b and WASP-52b with Ultranarrowband Photometry

Shreyas Vissapragada, Heather A. Knutson, Nemanja Jovanovic, Caleb K. Harada, Antonija Oklopčić, James Eriksen, Dimitri Mawet, Maxwell A. Millar-Blanchaer, Samaporn Tinyanont and Gautam Vasisht
The Astronomical Journal 159 (6) 278 (2020)
https://doi.org/10.3847/1538-3881/ab8e34

Detection of Ionized Calcium in the Atmosphere of the Ultra-hot Jupiter KELT-9b

Jake D. Turner, Ernst J. W. de Mooij, Ray Jayawardhana, Mitchell E. Young, Luca Fossati, Tommi Koskinen, Joshua D. Lothringer, Raine Karjalainen and Marie Karjalainen
The Astrophysical Journal Letters 888 (1) L13 (2020)
https://doi.org/10.3847/2041-8213/ab60a9

Planetary Transits at Radio Wavelengths: Secondary Eclipses of Hot Jupiter Extended Atmospheres

Caius L. Selhorst, Cassio L. Barbosa, Paulo J. A. Simões, Aline A. Vidotto and Adriana Valio
The Astrophysical Journal 895 (1) 62 (2020)
https://doi.org/10.3847/1538-4357/ab89a4

Evidence for He i 10830 Å Absorption during the Transit of a Warm Neptune around the M-dwarf GJ 3470 with the Habitable-zone Planet Finder

Joe P. Ninan, Gudmundur Stefansson, Suvrath Mahadevan, Chad Bender, Paul Robertson, Lawrence Ramsey, Ryan Terrien, Jason Wright, Scott A. Diddams, Shubham Kanodia, William Cochran, Michael Endl, Eric B. Ford, Connor Fredrick, Samuel Halverson, Fred Hearty, Jeff Jennings, Kyle Kaplan, Emily Lubar, Andrew J. Metcalf, Andrew Monson, Colin Nitroy, Arpita Roy and Christian Schwab
The Astrophysical Journal 894 (2) 97 (2020)
https://doi.org/10.3847/1538-4357/ab8559

Detecting Magnetic Fields in Exoplanets with Spectropolarimetry of the Helium Line at 1083 nm

Antonija Oklopčić, Makana Silva, Paulo Montero-Camacho and Christopher M. Hirata
The Astrophysical Journal 890 (1) 88 (2020)
https://doi.org/10.3847/1538-4357/ab67c6