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Connection between planetary He I λ10 830 Å absorption and extreme-ultraviolet emission of planet-host stars

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Astronomy & Astrophysics 693 A285 (2025)
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Atmospheric Mass Loss from TOI-1259 A b, a Gas Giant Planet with a White Dwarf Companion

Morgan Saidel, Shreyas Vissapragada, Jessica Spake, Heather A. Knutson, Dion Linssen, Michael Zhang, Michael Greklek-McKeon, Jorge Pérez-González and Antonija Oklopčić
The Astronomical Journal 169 (2) 104 (2025)
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Probing atmospheric escape through metastable He I triplet lines in 15 exoplanets observed with SPIRou

A. Masson, S. Vinatier, B. Bézard, M. López-Puertas, M. Lampón, F. Debras, A. Carmona, B. Klein, E. Artigau, W. Dethier, S. Pelletier, T. Hood, R. Allart, V. Bourrier, C. Cadieux, B. Charnay, N. B. Cowan, N. J. Cook, X. Delfosse, J.-F. Donati, P.-G. Gu, G. Hébrard, E. Martioli, C. Moutou, O. Venot and A. Wyttenbach
Astronomy & Astrophysics 688 A179 (2024)
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Spectropolarimetric characterisation of exoplanet host stars in preparation of the Ariel mission

S. Bellotti, D. Evensberget, A. A. Vidotto, A. Lavail, T. Lüftinger, G. A. J. Hussain, J. Morin, P. Petit, S. Boro Saikia, C. Danielski and G. Micela
Astronomy & Astrophysics 688 A63 (2024)
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The overflowing atmosphere of WASP-121 b

S. Czesla, F. Nail, A. Lavail, D. Cont, L. Nortmann, F. Lesjak, M. Rengel, L. Boldt-Christmas, D. Shulyak, U. Seemann, P. C. Schneider, A. Hatzes, O. Kochukhov, N. Piskunov, A. Reiners, D. J. Wilson and F. Yan
Astronomy & Astrophysics 692 A230 (2024)
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Revisiting the conundrum of the sub-Jovian and Neptune desert

C. Magliano, G. Covone, E. Corsaro, L. Inno, L. Cacciapuoti, S. Fiscale, I. Pagano and V. Saggese
Astronomy & Astrophysics 692 A162 (2024)
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A possibly solar metallicity atmosphere escaping from HAT-P-32b revealed by Hα and He absorption

Dongdong Yan, Jianheng Guo, Kwang-il Seon, Manuel López-Puertas, Stefan Czesla and Manuel Lampón
Astronomy & Astrophysics 686 A208 (2024)
https://doi.org/10.1051/0004-6361/202348210

WASP-69b’s Escaping Envelope Is Confined to a Tail Extending at Least 7 Rp

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The Astrophysical Journal 960 (2) 123 (2024)
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Atmospheric characterization and tighter constraints on the orbital misalignment of WASP-94 A b with HARPS

E Ahrer, J V Seidel, L Doyle, S Gandhi, B Prinoth, H M Cegla, C H McDonald, N Astudillo-Defru, E Ayache, R Nealon, Dimitri Veras, P J Wheatley and D Ehrenreich
Monthly Notices of the Royal Astronomical Society 530 (3) 2749 (2024)
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A reanalysis of the LHS 1140 b atmosphere observed with the Hubble Space Telescope

Alfredo Biagini, Gianluca Cracchiolo, Antonino Petralia, Jesús Maldonado, Claudia Di Maio and Giuseppina Micela
Monthly Notices of the Royal Astronomical Society 530 (1) 1054 (2024)
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The GAPS programme at TNG

M. C. D’Arpa, G. Guilluy, G. Mantovan, F. Biassoni, R. Spinelli, D. Sicilia, D. Locci, A. Maggio, A. F. Lanza, A. Petralia, C. Di Maio, S. Benatti, A. S. Bonomo, F. Borsa, L. Cabona, S. Desidera, L. Fossati, G. Micela, L. Malavolta, L. Mancini, G. Scandariato, A. Sozzetti, M. Stangret, L. Affer, F. Amadori, et al.
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The GAPS Programme at TNG

G. Guilluy, M. C. D’Arpa, A. S. Bonomo, R. Spinelli, F. Biassoni, L. Fossati, A. Maggio, P. Giacobbe, A. F. Lanza, A. Sozzetti, F. Borsa, M. Rainer, G. Micela, L. Affer, G. Andreuzzi, A. Bignamini, W. Boschin, I. Carleo, M. Cecconi, S. Desidera, V. Fardella, A. Ghedina, G. Mantovan, L. Mancini, V. Nascimbeni, et al.
Astronomy & Astrophysics 686 A83 (2024)
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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

M. Stangret, E. Palle, E. Esparza-Borges, J. Orell Miquel, N. Casasayas-Barris, M. R. Zapatero Osorio, E. Cristo, R. Allart, Y. Alibert, F. Borsa, O. D. S. Demangeon, P. Di Marcantonio, D. Ehrenreich, P. Figueira, J. I. González Hernández, E. Herrero-Cisneros, C. J. A. P. Martins, N. C. Santos, J. V. Seidel, T. Azevedo Silva, A. Sozzetti, M. Steiner, A. Suárez Mascareño and S. Udry
Astronomy & Astrophysics 691 A120 (2024)
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Detecting Exoplanet Transits with the Next Generation of X-Ray Telescopes

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The Astronomical Journal 168 (4) 177 (2024)
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The MOPYS project: A survey of 70 planets in search of extended He I and H atmospheres

J. Orell-Miquel, F. Murgas, E. Pallé, M. Mallorquín, M. López-Puertas, M. Lampón, J. Sanz-Forcada, L. Nortmann, S. Czesla, E. Nagel, I. Ribas, M. Stangret, J. Livingston, E. Knudstrup, S. H. Albrecht, I. Carleo, J. A. Caballero, F. Dai, E. Esparza-Borges, A. Fukui, K. Heng, Th. Henning, T. Kagetani, F. Lesjak, J. P. de Leon, et al.
Astronomy & Astrophysics 689 A179 (2024)
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Muted Features in the JWST NIRISS Transmission Spectrum of Hot Neptune LTT 9779b

Michael Radica, Louis-Philippe Coulombe, Jake Taylor, Loic Albert, Romain Allart, Björn Benneke, Nicolas B. Cowan, Lisa Dang, David Lafrenière, Daniel Thorngren, Étienne Artigau, René Doyon, Laura Flagg, Doug Johnstone, Stefan Pelletier and Pierre-Alexis Roy
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The GAPS Programme at TNG

D. Sicilia, G. Scandariato, G. Guilluy, M. Esposito, F. Borsa, M. Stangret, C. Di Maio, A. F. Lanza, A. S. Bonomo, S. Desidera, L. Fossati, D. Nardiello, A. Sozzetti, L. Malavolta, V. Nascimbeni, M. Rainer, M. C. D’Arpa, L. Mancini, V. Singh, T. Zingales, L. Affer, A. Bignamini, R. Claudi, S. Colombo, R. Cosentino, et al.
Astronomy & Astrophysics 687 A143 (2024)
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Investigations of Optical Properties of the Atmospheres of Hot Exoplanets by Numerical Simulation of Transit Absorptions in the HeI 10 830-Å Line

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Atmospheric and Oceanic Optics 37 (2) 192 (2024)
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Searching for NLTE effects in the high-resolution transmission spectrum of WASP-121 b with cloudy for exoplanets

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Monthly Notices of the Royal Astronomical Society 530 (4) 4356 (2024)
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Self-consistent modeling of metastable helium exoplanet transits

Federico Biassoni, Andrea Caldiroli, Elena Gallo, Francesco Haardt, Riccardo Spinelli and Francesco Borsa
Astronomy & Astrophysics 682 A115 (2024)
https://doi.org/10.1051/0004-6361/202347517

Near-infrared transmission spectroscopy of HAT-P-18 b with NIRISS: Disentangling planetary and stellar features in the era of JWST

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Exoplanet Aeronomy: A Case Study of WASP-69 b’s Variable Thermosphere

W. Garrett Levine, Shreyas Vissapragada, Adina D. Feinstein, George W. King, Aleck Hernandez, Lía Corrales, Michael Greklek-McKeon and Heather A. Knutson
The Astronomical Journal 168 (2) 65 (2024)
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The Strength and Variability of the Helium 10830 Å Triplet in Young Stars, with Implications for Exosphere Detection

Daniel M. Krolikowski, Adam L. Kraus, Benjamin M. Tofflemire, Caroline V. Morley, Andrew W. Mann and Andrew Vanderburg
The Astronomical Journal 167 (2) 79 (2024)
https://doi.org/10.3847/1538-3881/ad0f22

Stellar Characterization and Chemical Abundances of Exoplanet-hosting M Dwarfs from APOGEE Spectra: Future JWST Targets

Edypo Melo, Diogo Souto, Katia Cunha, Verne V. Smith, Fábio Wanderley, Vinicius Grilo, Deusalete Camara, Kely Murta, Neda Hejazi, Ian J. M. Crossfield, Johanna Teske, Rafael Luque, Michael Zhang and Jacob Bean
The Astrophysical Journal 973 (2) 90 (2024)
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Multiepoch Detections of the Extended Atmosphere and Transmission Spectra of KELT-9b with a 1.5 m Telescope

Nataliea Lowson, George Zhou, Duncan J. Wright, Chelsea X. Huang, João M. Mendonça, Samuel H. C. Cabot, Christa Pudmenzky, Robert A. Wittenmyer, David W. Latham, Allyson Bieryla, Gilbert A. Esquerdo, Perry Berlind and Michael L. Calkins
The Astronomical Journal 165 (3) 101 (2023)
https://doi.org/10.3847/1538-3881/acacf3

Homogeneous search for helium in the atmosphere of 11 gas giant exoplanets with SPIRou

R. Allart, P.-B. Lemée-Joliecoeur, A. Y. Jaziri, D. Lafrenière, E. Artigau, N. Cook, A. Darveau-Bernier, L. Dang, C. Cadieux, A. Boucher, V. Bourrier, E. K. Deibert, S. Pelletier, M. Radica, B. Benneke, A. Carmona, R. Cloutier, N. B. Cowan, X. Delfosse, J.-F. Donati, R. Doyon, P. Figueira, T. Forveille, P. Fouqué, E. Gaidos, et al.
Astronomy & Astrophysics 677 A164 (2023)
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Hydrodynamic Atmospheric Escape in HD 189733 b: Signatures of Carbon and Hydrogen Measured with the Hubble Space Telescope

Leonardo A. Dos Santos, Antonio García Muñoz, David K. Sing, Mercedes López-Morales, Munazza K. Alam, Vincent Bourrier, David Ehrenreich, Gregory W. Henry, Alain Lecavelier des Etangs, Thomas Mikal-Evans, Nikolay K. Nikolov, Jorge Sanz-Forcada and Hannah R. Wakeford
The Astronomical Journal 166 (3) 89 (2023)
https://doi.org/10.3847/1538-3881/ace445

Confirmation of an He I evaporating atmosphere around the 650-Myr-old sub-Neptune HD 235088 b (TOI-1430 b) with CARMENES

J. Orell-Miquel, M. Lampón, M. López-Puertas, M. Mallorquín, F. Murgas, A. Peláez-Torres, E. Pallé, E. Esparza-Borges, J. Sanz-Forcada, H. M. Tabernero, L. Nortmann, E. Nagel, H. Parviainen, M. R. Zapatero Osorio, J. A. Caballero, S. Czesla, C. Cifuentes, G. Morello, A. Quirrenbach, P. J. Amado, A. Fernández-Martín, A. Fukui, Th. Henning, K. Kawauchi, J. P. de Leon, et al.
Astronomy & Astrophysics 677 A56 (2023)
https://doi.org/10.1051/0004-6361/202346445

Possible origin of the non-detection of metastable He I in the upper atmosphere of the hot Jupiter WASP-80b

L. Fossati, I. Pillitteri, I. F. Shaikhislamov, et al.
Astronomy & Astrophysics 673 A37 (2023)
https://doi.org/10.1051/0004-6361/202245667

Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES+

A. Hahlin, O. Kochukhov, A. D. Rains, A. Lavail, A. Hatzes, N. Piskunov, A. Reiners, U. Seemann, L. Boldt-Christmas, E. W. Guenther, U. Heiter, L. Nortmann, F. Yan, D. Shulyak, J. V. Smoker, F. Rodler, P. Bristow, R. J. Dorn, Y. Jung, T. Marquart and E. Stempels
Astronomy & Astrophysics 675 A91 (2023)
https://doi.org/10.1051/0004-6361/202346314

The CARMENES search for exoplanets around M dwarfs

E. Nagel, S. Czesla, A. Kaminski, M. Zechmeister, L. Tal-Or, J. H. M. M. Schmitt, A. Reiners, A. Quirrenbach, A. García López, J. A. Caballero, I. Ribas, P. J. Amado, V. J. S. Béjar, M. Cortés-Contreras, S. Dreizler, A. P. Hatzes, Th. Henning, S. V. Jeffers, M. Kürster, M. Lafarga, M. López-Puertas, D. Montes, J. C. Morales, S. Pedraz and A. Schweitzer
Astronomy & Astrophysics 680 A73 (2023)
https://doi.org/10.1051/0004-6361/202346524

Nondetection of Helium in the Hot Jupiter WASP-48b

Katherine A. Bennett, Seth Redfield, Antonija Oklopčić, Ilaria Carleo, Joe P. Ninan and Michael Endl
The Astronomical Journal 165 (6) 264 (2023)
https://doi.org/10.3847/1538-3881/acd34b

Using helium 10 830 Å transits to constrain planetary magnetic fields

Ethan Schreyer, James E Owen, Jessica J Spake, Zahra Bahroloom and Simone Di Giampasquale
Monthly Notices of the Royal Astronomical Society 527 (3) 5117 (2023)
https://doi.org/10.1093/mnras/stad3528

NIGHT: A compact, near-infrared, high-resolution spectrograph to survey helium in exoplanet systems

C Farret Jentink, V Bourrier, C Lovis, R Allart, B Chazelas, M Lendl, X Dumusque and F Pepe
Monthly Notices of the Royal Astronomical Society 527 (3) 4467 (2023)
https://doi.org/10.1093/mnras/stad3285

Self-consistent simulation of photoelectrons in exoplanet winds: Faster ionisation and weaker mass-loss rates

A. Gillet, A. García Muñoz and A. Strugarek
Astronomy & Astrophysics 680 A33 (2023)
https://doi.org/10.1051/0004-6361/202347066

Characterisation of the upper atmospheres of HAT-P-32 b, WASP-69 b, GJ 1214 b, and WASP-76 b through their He I triplet absorption

M. Lampón, M. López-Puertas, J. Sanz-Forcada, et al.
Astronomy & Astrophysics 673 A140 (2023)
https://doi.org/10.1051/0004-6361/202245649

DREAM

G. Guilluy, V. Bourrier, Y. Jaziri, W. Dethier, D. Mounzer, P. Giacobbe, M. Attia, R. Allart, A. S. Bonomo, L. A. Dos Santos, M. Rainer and A. Sozzetti
Astronomy & Astrophysics 676 A130 (2023)
https://doi.org/10.1051/0004-6361/202346419

Modeling the Chromosphere and Transition Region of Planet-hosting Star GJ 436

Dominik Hintz, Sarah Peacock, Travis Barman, Birgit Fuhrmeister, Evangelos Nagel, Andreas Schweitzer, Sandra V. Jeffers, Ignasi Ribas, Ansgar Reiners, Andreas Quirrenbach, Pedro J. Amado, Victor J. S. Béjar, José A. Caballero, Artie P. Hatzes and David Montes
The Astrophysical Journal 954 (1) 73 (2023)
https://doi.org/10.3847/1538-4357/ace103

Detection of Atmospheric Escape from Four Young Mini-Neptunes

Michael Zhang, Heather A. Knutson, Fei Dai, Lile Wang, George R. Ricker, Richard P. Schwarz, Christopher Mann and Karen Collins
The Astronomical Journal 165 (2) 62 (2023)
https://doi.org/10.3847/1538-3881/aca75b

Planetary Parameters, XUV Environments, and Mass-loss Rates for Nearby Gaseous Planets with X-Ray-detected Host Stars

Riccardo Spinelli, Elena Gallo, Francesco Haardt, Andrea Caldiroli, Federico Biassoni, Francesco Borsa and Emily Rauscher
The Astronomical Journal 165 (5) 200 (2023)
https://doi.org/10.3847/1538-3881/acc336

Giant tidal tails of helium escaping the hot Jupiter HAT-P-32 b

Zhoujian Zhang, Caroline V. Morley, Michael Gully-Santiago, Morgan MacLeod, Antonija Oklopčić, Jessica Luna, Quang H. Tran, Joe P. Ninan, Suvrath Mahadevan, Daniel M. Krolikowski, William D. Cochran, Brendan P. Bowler, Michael Endl, Gudmundur Stefánsson, Benjamin M. Tofflemire, Andrew Vanderburg and Gregory R. Zeimann
Science Advances 9 (23) (2023)
https://doi.org/10.1126/sciadv.adf8736

Escaping Helium from TOI 560.01, a Young Mini-Neptune

Michael Zhang, Heather A. Knutson, Lile Wang, Fei Dai and Oscar Barragán
The Astronomical Journal 163 (2) 67 (2022)
https://doi.org/10.3847/1538-3881/ac3fa7

Non-detection of He I in the Atmosphere of GJ 1214b with Keck/NIRSPEC, at a Time of Minimal Telluric Contamination

Jessica J. Spake, A. Oklopčić, L. A. Hillenbrand, Heather A. Knutson, David Kasper, Fei Dai, Jaume Orell-Miquel, Shreyas Vissapragada, Michael Zhang and Jacob L. Bean
The Astrophysical Journal Letters 939 (1) L11 (2022)
https://doi.org/10.3847/2041-8213/ac88c9

The Upper Edge of the Neptune Desert Is Stable Against Photoevaporation

Shreyas Vissapragada, Heather A. Knutson, Michael Greklek-McKeon, Antonija Oklopčić, Fei Dai, Leonardo A. dos Santos, Nemanja Jovanovic, Dimitri Mawet, Maxwell A. Millar-Blanchaer, Kimberly Paragas, Jessica J. Spake, Samaporn Tinyanont and Gautam Vasisht
The Astronomical Journal 164 (6) 234 (2022)
https://doi.org/10.3847/1538-3881/ac92f2

Keck/NIRSPEC Studies of He i in the Atmospheres of Two Inflated Hot Gas Giants Orbiting K Dwarfs: WASP-52b and WASP-177b

James Kirk, Leonardo A. Dos Santos, Mercedes López-Morales, Munazza K. Alam, Antonija Oklopčić, Morgan MacLeod, Li Zeng and George Zhou
The Astronomical Journal 164 (1) 24 (2022)
https://doi.org/10.3847/1538-3881/ac722f

Constraining planetary mass-loss rates by simulating Parker wind profiles with Cloudy

D. C. Linssen, A. Oklopčić and M. MacLeod
Astronomy & Astrophysics 667 A54 (2022)
https://doi.org/10.1051/0004-6361/202243830

Solar Hα excess during Solar Cycle 24 from full-disk filtergrams of the Chromospheric Telescope

A. Diercke, C. Kuckein, P. W. Cauley, et al.
Astronomy & Astrophysics 661 A107 (2022)
https://doi.org/10.1051/0004-6361/202040091

Global 3D Simulation of the Upper Atmosphere of HD189733b and Absorption in Metastable He i and Lyα Lines

M. S. Rumenskikh, I. F. Shaikhislamov, M. L. Khodachenko, H. Lammer, I. B. Miroshnichenko, A. G. Berezutsky and L. Fossati
The Astrophysical Journal 927 (2) 238 (2022)
https://doi.org/10.3847/1538-4357/ac441d

Modeling the Hα and He 10830 Transmission Spectrum of WASP-52b

Dongdong Yan, Kwang-il Seon, Jianheng Guo, Guo Chen and Lifang Li
The Astrophysical Journal 936 (2) 177 (2022)
https://doi.org/10.3847/1538-4357/ac8793

The Maximum Mass-loss Efficiency for a Photoionization-driven Isothermal Parker Wind

Shreyas Vissapragada, Heather A. Knutson, Leonardo A. dos Santos, Lile Wang and Fei Dai
The Astrophysical Journal 927 (1) 96 (2022)
https://doi.org/10.3847/1538-4357/ac4e8a

TOI-3757 b: A Low-density Gas Giant Orbiting a Solar-metallicity M Dwarf

Shubham Kanodia, Jessica Libby-Roberts, Caleb I. Cañas, Joe P. Ninan, Suvrath Mahadevan, Gudmundur Stefansson, Andrea S. J. Lin, Sinclaire Jones, Andrew Monson, Brock A. Parker, Henry A. Kobulnicky, Tera N. Swaby, Luke Powers, Corey Beard, Chad F. Bender, Cullen H. Blake, William D. Cochran, Jiayin Dong, Scott A. Diddams, Connor Fredrick, Arvind F. Gupta, Samuel Halverson, Fred Hearty, Sarah E. Logsdon, Andrew J. Metcalf, et al.
The Astronomical Journal 164 (3) 81 (2022)
https://doi.org/10.3847/1538-3881/ac7c20

More Evidence for Variable Helium Absorption from HD 189733b

Michael Zhang, P. Wilson Cauley, Heather A. Knutson, Kevin France, Laura Kreidberg, Antonija Oklopčić, Seth Redfield and Evgenya L. Shkolnik
The Astronomical Journal 164 (6) 237 (2022)
https://doi.org/10.3847/1538-3881/ac9675

Validation and atmospheric exploration of the sub-Neptune TOI-2136b around a nearby M3 dwarf

K. Kawauchi, F. Murgas, E. Palle, et al.
Astronomy & Astrophysics 666 A4 (2022)
https://doi.org/10.1051/0004-6361/202243381

The Effects of Stellar Gravity Darkening on High-resolution Transmission Spectra

P. Wilson Cauley and John P. Ahlers
The Astronomical Journal 163 (3) 122 (2022)
https://doi.org/10.3847/1538-3881/ac478f

Characterization of exoplanetary atmospheres through a model-unbiased spectral survey methodology

A. Lira-Barria, P. M. Rojo and R. A. Mendez
Astronomy & Astrophysics 657 A36 (2022)
https://doi.org/10.1051/0004-6361/202140494

A Search for Planetary Metastable Helium Absorption in the V1298 Tau System

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

Decomposing the iron cross-correlation signal of the ultra-hot Jupiter WASP-76b in transmission using 3D Monte Carlo radiative transfer

Joost P Wardenier, Vivien Parmentier, Elspeth K H Lee, Michael R Line and Ehsan Gharib-Nezhad
Monthly Notices of the Royal Astronomical Society 506 (1) 1258 (2021)
https://doi.org/10.1093/mnras/stab1797

Metastable Helium Reveals an Extended Atmosphere for the Gas Giant HAT-P-18b

Kimberly Paragas, Shreyas Vissapragada, Heather A. Knutson, Antonija Oklopčić, Yayaati Chachan, Michael Greklek-McKeon, Fei Dai, Samaporn Tinyanont and Gautam Vasisht
The Astrophysical Journal Letters 909 (1) L10 (2021)
https://doi.org/10.3847/2041-8213/abe706

A Multiwavelength Look at the GJ 9827 System: No Evidence of Extended Atmospheres in GJ 9827b and d from HST and CARMENES Data

Ilaria Carleo, Allison Youngblood, Seth Redfield, Nuria Casasayas Barris, Thomas R. Ayres, Hunter Vannier, Luca Fossati, Enric Palle, John H. Livingston, Antonino F. Lanza, Prajwal Niraula, Julián D. Alvarado-Gómez, Guo Chen, Davide Gandolfi, Eike W. Guenther, Jeffrey L. Linsky, Evangelos Nagel, Norio Narita, Lisa Nortmann, Evgenya L. Shkolnik and Monika Stangret
The Astronomical Journal 161 (3) 136 (2021)
https://doi.org/10.3847/1538-3881/abdb2f

A Near-infrared Chemical Inventory of the Atmosphere of 55 Cancri e

Emily K. Deibert, Ernst J. W. de Mooij, Ray Jayawardhana, Andrew Ridden-Harper, Suresh Sivanandam, Raine Karjalainen and Marie Karjalainen
The Astronomical Journal 161 (5) 209 (2021)
https://doi.org/10.3847/1538-3881/abe768

Wolf 503 b: Characterization of a Sub-Neptune Orbiting a Metal-poor K Dwarf

Alex S. Polanski, Ian J. M. Crossfield, Jennifer A. Burt, Grzegorz Nowak, Mercedes López-Morales, Annelies Mortier, Ennio Poretti, Aida Behmard, Björn Benneke, Sarah Blunt, Aldo S. Bonomo, R. Paul Butler, Ashley Chontos, Rosario Cosentino, Jeffrey D. Crane, Xavier Dumusque, Benjamin J. Fulton, Adriano Ghedina, Varoujan Gorjian, Samuel K. Grunblatt, Avet Harutyunyan, Andrew W. Howard, Howard Isaacson, Molly R. Kosiarek, David W. Latham, et al.
The Astronomical Journal 162 (6) 238 (2021)
https://doi.org/10.3847/1538-3881/ac1590

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

Spectral signature of atmospheric winds in high-resolution transit observations

Engin Keles
Monthly Notices of the Royal Astronomical Society 502 (1) 1456 (2021)
https://doi.org/10.1093/mnras/stab099

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

Metastable Helium Absorptions with 3D Hydrodynamics and Self-consistent Photochemistry. II. WASP-107b, Stellar Wind, Radiation Pressure, and Shear Instability

Lile Wang and Fei Dai
The Astrophysical Journal 914 (2) 99 (2021)
https://doi.org/10.3847/1538-4357/abf1ed

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

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

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

The near-UV transit of HD 189733b with the XMM–Newton optical monitor

George W King, Lía Corrales, Peter J Wheatley, et al.
Monthly Notices of the Royal Astronomical Society 506 (2) 2453 (2021)
https://doi.org/10.1093/mnras/stab1863

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

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

Cloud property trends in hot and ultra-hot giant gas planets (WASP-43b, WASP-103b, WASP-121b, HAT-P-7b, and WASP-18b)

Ch. Helling, D. Lewis, D. Samra, et al.
Astronomy & Astrophysics 649 A44 (2021)
https://doi.org/10.1051/0004-6361/202039911

Simulation of 10 830 Å absorption with a 3D hydrodynamic model reveals the solar He abundance in upper atmosphere of WASP-107b

M L Khodachenko, I F Shaikhislamov, L Fossati, H Lammer, M S Rumenskikh, A G Berezutsky, I B Miroshnichenko and M A Efimof
Monthly Notices of the Royal Astronomical Society: Letters 503 (1) L23 (2021)
https://doi.org/10.1093/mnrasl/slab015

Non-local thermodynamic equilibrium effects determine the upper atmospheric temperature structure of the ultra-hot Jupiter KELT-9b

L. Fossati, M. E. Young, D. Shulyak, et al.
Astronomy & Astrophysics 653 A52 (2021)
https://doi.org/10.1051/0004-6361/202140813

Metastable Helium Absorptions with 3D Hydrodynamics and Self-consistent Photochemistry. I. WASP-69b, Dimensionality, X-Ray and UV Flux Level, Spectral Types, and Flares

Lile Wang and Fei Dai
The Astrophysical Journal 914 (2) 98 (2021)
https://doi.org/10.3847/1538-4357/abf1ee

No Escaping Helium from 55 Cnc e*

Michael Zhang, Heather A. Knutson, Lile Wang, Fei Dai, Antonija Oklopcic and Renyu Hu
The Astronomical Journal 161 (4) 181 (2021)
https://doi.org/10.3847/1538-3881/abe382