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New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs

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A JWST Panchromatic Thermal Emission Spectrum of the Warm Neptune Archetype GJ 436b

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A Tentative Detection of a Point Source in the Disk Gap of HD 100546 with VLT/SPHERE-IRDIS Sparse Aperture Masking Interferometry*

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The Astronomical Journal 169 (3) 152 (2025)
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The COBREX archival survey: Improved constraints on the occurrence rate of wide-orbit substellar companions

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Redshifting the Study of Cold Brown Dwarfs and Exoplanets: The Mid-infrared Wavelength Region as an Indicator of Surface Gravity and Mass

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The Astrophysical Journal 979 (2) 145 (2025)
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The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems. III. Aperture Masking Interferometric Observations of the Star HIP 65426 at 3.8 μm

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TOI-6508 b: A massive transiting brown dwarf orbiting a low-mass star

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Identification of a Turnover in the Initial Mass Function of a Young Stellar Cluster Down to 0.5 M J

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SDSS J100711.74+193056.2: A Candidate Common Motion Substellar Companion to the Nearest B-type Star Regulus

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A Survey of Model Fits to Brown Dwarf Spectra Through the L–T Sequence

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The Astronomical Journal 170 (1) 43 (2025)
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The Y dwarf population with HST: unlocking the secrets of our coolest neighbours – II. Parallaxes and proper motions

Clémence Fontanive, Luigi R Bedin, Loïc Albert and Daniella C Bardalez Gagliuffi
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The TW Hydrae Association is a cluster chain of Sco-Cen

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VLTI/GRAVITY Observations of AF Lep b: Preference for Circular Orbits, Cloudy Atmospheres, and a Moderately Enhanced Metallicity

William O. Balmer, Kyle Franson, Antoine Chomez, Laurent Pueyo, Tomas Stolker, Sylvestre Lacour, Mathias Nowak, Evert Nasedkin, Markus J. Bonse, Daniel Thorngren, Paulina Palma-Bifani, Paul Mollière, Jason J. Wang, Zhoujian Zhang, Amanda Chavez, Jens Kammerer, Sarah Blunt, Brendan P. Bowler, Mickael Bonnefoy, Wolfgang Brandner, Benjamin Charnay, Gael Chauvin, Th. Henning, A.-M. Lagrange, Nicolas Pourré, et al.
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A Candidate Giant Planet Companion to the Massive, Young White Dwarf GALEX J071816.4+373139 Informs the Occurrence of Giant Planets Orbiting B Stars

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The Astronomical Journal 170 (1) 47 (2025)
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Three Brown Dwarfs Masquerading as High-redshift Galaxies in JWST Observations

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Effects of Planetary Parameters on Disequilibrium Chemistry in Irradiated Planetary Atmospheres: From Gas Giants to Sub-Neptunes

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The Astrophysical Journal 985 (2) 209 (2025)
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Differentiating formation models with new dynamical masses for the PDS 70 protoplanets

David Trevascus, Sarah Blunt, Valentin Christiaens, Elisabeth Matthews, Iain Hammond, Wolfgang Brandner, Jason Wang, Sylvestre Lacour, Arthur Vigan, William O. Balmer, Mickael Bonnefoy, Remo Burn, Gaël Chauvin, Raffaele Gratton, Mathis Houllé, Sasha Hinkley, Jens Kammerer, Laura Kreidberg, Gabriel-Dominique Marleau, Dino Mesa, Gilles Otten, Mathias Nowak, Emily Rickman, Joel Sanchez-Bermudez and Jonas Sauter
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HCN and C2H2 in the Atmosphere of a T8.5+T9 Brown Dwarf Binary

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MIRI-JWST mid-infrared direct imaging of the debris disk of HD 106906

Daniel Rouan, Anthony Boccaletti, Clément Perrot, Pierre Baudoz, Mathilde Mâlin, Pierre-Olivier Lagage, Rens Waters, Manuel Güdel, Thomas Henning, Bart Vandenbussche, Olivier Absil, David Barrado, Christophe Cossou, Leen Decin, Adrian M. Glauser, John Pye, Polychronis Patapis, Niall Whiteford, Eugene Serabyn, Elodie Choquet, Göran Ostlin, Tom P. Ray and Gillian Wright
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A Small Brown Dwarf in an Aligned Orbit Around a Young, Fully Convective M Star

Madison Brady, Jacob L. Bean, Gumundur Stefánsson, Nina Brown, Andreas Seifahrt, Ritvik Basant, Tanya Das, Rafael Luque and Julian Stürmer
The Astronomical Journal 169 (2) 64 (2025)
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Hα Variability of AB Aur b with the Hubble Space Telescope: Probing the Nature of a Protoplanet Candidate with Accretion Light Echoes

Brendan P. Bowler, Yifan Zhou, Lauren I. Biddle, Lillian Yushu Jiang, Jaehan Bae, Laird M. Close, Katherine B. Follette, Kyle Franson, Adam L. Kraus, Aniket Sanghi, Quang Tran, Kimberly Ward-Duong, Ya-Lin Wu and Zhaohuan Zhu
The Astronomical Journal 169 (5) 258 (2025)
https://doi.org/10.3847/1538-3881/adb6a1

NIRCam Yells at Cloud: JWST MIRI Imaging Can Directly Detect Exoplanets of the Same Temperature, Mass, Age, and Orbital Separation as Saturn and Jupiter

Rachel Bowens-Rubin, James Mang, Mary Anne Limbach, Aarynn L. Carter, Kevin B. Stevenson, Kevin Wagner, Giovanni Strampelli, Caroline V. Morley, Grant Kennedy, Elisabeth Matthews, Andrew Vanderburg and Maïssa Salama
The Astrophysical Journal Letters 986 (2) L26 (2025)
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Detection of Hydrocarbons in the Disk around an Actively Accreting Planetary-mass Object

Laura Flagg, Aleks Scholz, V. Almendros-Abad, Ray Jayawardhana, Belinda Damian, Koraljka Mužić, Antonella Natta, Paola Pinilla and Leonardo Testi
The Astrophysical Journal 986 (2) 200 (2025)
https://doi.org/10.3847/1538-4357/add71d

Dynamical and Atmospheric Characterization of the Substellar Companion HD 33632 Ab from Direct Imaging, Astrometry, and Radial-velocity Data*

Mona El Morsy, Thayne Currie, Danielle Bovie, Masayuki Kuzuhara, Brianna Lacy, Yiting Li, Taylor Tobin, Timothy D. Brandt, Jeffrey Chilcote, Olivier Guyon, Tyler D. Groff, Julien Lozi, Sebastien Vievard, Vincent Deo, Nour Skaf, Francois Bouchy, Isabelle Boisse, Erica Dykes, N. Jeremy Kasdin and Motohide Tamura
The Astrophysical Journal 981 (1) 20 (2025)
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Discovery of two new polars evolved past the period bounce

Tim Cunningham, Ilaria Caiazzo, Gracjan Sienkiewicz, Peter J Wheatley, Boris T Gänsicke, Kareem El-Badry, Riccardo Arcodia, David Charbonneau, Liam Connor, Kishalay De, Pasi Hakala, Scott J Kenyon, Sumit Kumar Maheshwari, Antonio C Rodriguez, Jan van Roestel and Pier-Emmanuel Tremblay
Monthly Notices of the Royal Astronomical Society 540 (1) 633 (2025)
https://doi.org/10.1093/mnras/staf561

Optical constraints on the coldest metal-poor population

J.-Y. Zhang, N. Lodieu, E. L. Martín, M. R. Zapatero Osorio, V. J. S. Béjar, V. D. Ivanov, H. M. J. Boffin, T. Shahbaz, Ya. V. Pavlenko, R. Rebolo, B. Gauza, N. Sedighi and C. Quezada
Astronomy & Astrophysics 698 A141 (2025)
https://doi.org/10.1051/0004-6361/202453246

A possible trail of dust from a young, highly extincted brown dwarf in the outskirts of the Trapezium Cluster

Thomas J Haworth, Mark J McCaughrean, Samuel G Pearson and Richard A Booth
Monthly Notices of the Royal Astronomical Society 537 (4) 3313 (2025)
https://doi.org/10.1093/mnras/staf243

JWST 1.5 μm and 4.8 μm Photometry of Y Dwarfs

Loïc Albert, Sandy K. Leggett, Per Calissendorff, Thomas Vandal, J. Davy Kirkpatrick, Daniella C. Bardalez Gagliuffi, Matthew De Furio, Michael Meyer, Charles A. Beichman, Adam J. Burgasser, Michael C. Cushing, Jacqueline Kelly Faherty, Clémence Fontanive, Christopher R. Gelino, John E. Gizis, Alexandra Z. Greenbaum, Frantz Martinache, Mamadou N’Diaye, Benjamin J. S. Pope, Thomas L. Roellig, Johannes Sahlmann, Anand Sivaramakrishnan and Marie Ygouf
The Astronomical Journal 169 (3) 163 (2025)
https://doi.org/10.3847/1538-3881/adadf9

First unambiguous detection of ammonia in the atmosphere of a planetary mass companion with JWST/MIRI coronagraphs

Mathilde Mâlin, Anthony Boccaletti, Clément Perrot, Pierre Baudoz, Daniel Rouan, Pierre-Olivier Lagage, Rens Waters, Manuel Güdel, Thomas Henning, Bart Vandenbussche, Olivier Absil, David Barrado, Benjamin Charnay, Elodie Choquet, Christophe Cossou, Camilla Danielski, Leen Decin, Adrian M. Glauser, John Pye, Goran Olofsson, Alistair Glasse, Polychronis Patapis, Pierre Royer, Silvia Scheithauer, Eugene Serabyn, et al.
Astronomy & Astrophysics 693 A315 (2025)
https://doi.org/10.1051/0004-6361/202452695

The Sonora Substellar Atmosphere Models. IV. Elf Owl: Atmospheric Mixing and Chemical Disequilibrium with Varying Metallicity and C/O Ratios

Sagnick Mukherjee, Jonathan J. Fortney, Caroline V. Morley, Natasha E. Batalha, Mark S. Marley, Theodora Karalidi, Channon Visscher, Roxana Lupu, Richard Freedman and Ehsan Gharib-Nezhad
The Astrophysical Journal 963 (1) 73 (2024)
https://doi.org/10.3847/1538-4357/ad18c2

The Gaia ultracool dwarf sample – V: the ultracool dwarf companion catalogue

Sayan Baig, R L Smart, Hugh R A Jones, Jonathan Gagné, D J Pinfield, Gemma Cheng and Leslie Moranta
Monthly Notices of the Royal Astronomical Society 533 (4) 3784 (2024)
https://doi.org/10.1093/mnras/stae2005

The Keck-HGCA Pilot Survey – II. Direct imaging discovery of HD 63754 B, a ∼20 au massive companion near the hydrogen burning limit

Yiting Li, Timothy D Brandt, Kyle Franson, Qier An, Taylor Tobin, Thayne Currie, Minghan Chen, Lanxuan Wang, Trent J Dupuy, Rachel Bowens-Rubin, Maïssa Salama, Briley L Lewis, Aidan Gibbs, Brendan P Bowler, Rebecca Jensen-Clem, Jacqueline Faherty, Michael P Fitzgerald and Benjamin A Mazin
Monthly Notices of the Royal Astronomical Society 533 (3) 3501 (2024)
https://doi.org/10.1093/mnras/stae1903

UNCOVER: JWST Spectroscopy of Three Cold Brown Dwarfs at Kiloparsec-scale Distances

Adam J. Burgasser, Rachel Bezanson, Ivo Labbe, Gabriel Brammer, Sam E. Cutler, Lukas J. Furtak, Jenny E. Greene, Roman Gerasimov, Joel Leja, Richard Pan, Sedona H. Price, Bingjie 冰洁 Wang 王, John R. Weaver, Katherine E. Whitaker, Seiji Fujimoto, Vasily Kokorev, Pratika Dayal, Themiya Nanayakkara, Christina C. Williams, Danilo Marchesini, Adi Zitrin and Pieter van Dokkum
The Astrophysical Journal 962 (2) 177 (2024)
https://doi.org/10.3847/1538-4357/ad206f

The Impact of Cometary “Impacts” on the Chemistry, Climate, and Spectra of Hot Jupiter Atmospheres

F. Sainsbury-Martinez and C. Walsh
The Astrophysical Journal 966 (1) 39 (2024)
https://doi.org/10.3847/1538-4357/ad28b3

A JWST Project on 47 Tucanae. Overview, Photometry, and Early Spectroscopic Results of M Dwarfs and Observations of Brown Dwarfs*

A. F. Marino, A. P. Milone, M. V. Legnardi, A. Renzini, E. Dondoglio, Y. Cavecchi, G. Cordoni, A. Dotter, E. P. Lagioia, T. Ziliotto, M. Bernizzoni, E. Bortolan, M. G. Carlos, S. Jang, A. Mohandasan, F. Muratore and M. Tailo
The Astrophysical Journal 965 (2) 189 (2024)
https://doi.org/10.3847/1538-4357/ad293e

Optical properties of Y dwarfs observed with the Gran Telescopio Canarias

E. L. Martín, J.-Y. Zhang, H. Lanchas, N. Lodieu, T. Shahbaz and Ya. V. Pavlenko
Astronomy & Astrophysics 686 A73 (2024)
https://doi.org/10.1051/0004-6361/202347581

Exploring the Chemistry and Mass Function of the Globular Cluster 47 Tucanae with New Theoretical Color–Magnitude Diagrams

Roman Gerasimov, Adam J. Burgasser, Ilaria Caiazzo, Derek Homeier, Harvey B. Richer, Matteo Correnti and Jeremy Heyl
The Astrophysical Journal 961 (1) 139 (2024)
https://doi.org/10.3847/1538-4357/ad08bf

Combining reference-star and angular differential imaging for high-contrast imaging of extended sources

S. Juillard, V. Christiaens, O. Absil, S. Stasevic and J. Milli
Astronomy & Astrophysics 688 A185 (2024)
https://doi.org/10.1051/0004-6361/202449747

Brown Dwarf Candidates in the JADES and CEERS Extragalactic Surveys

Kevin N. Hainline, Jakob M. Helton, Benjamin D. Johnson, Fengwu Sun, Michael W. Topping, Jarron M. Leisenring, William M. Baker, Daniel J. Eisenstein, Ryan Hausen, Raphael E. Hviding, Jianwei Lyu, Brant Robertson, Sandro Tacchella, Christina C. Williams, Christopher N. A. Willmer and Thomas L. Roellig
The Astrophysical Journal 964 (1) 66 (2024)
https://doi.org/10.3847/1538-4357/ad20d1

HD 28185 revisited: an outer planet, instead of a brown dwarf, on a Saturn-like orbit

Alexander Venner, Qier An, Chelsea X Huang, Timothy D Brandt, Robert A Wittenmyer and Andrew Vanderburg
Monthly Notices of the Royal Astronomical Society 535 (1) 90 (2024)
https://doi.org/10.1093/mnras/stae2336

VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab Formed Like a “Failed Star”

William O. Balmer, L. Pueyo, S. Lacour, J. J. Wang, T. Stolker, J. Kammerer, N. Pourré, M. Nowak, E. Rickman, S. Blunt, A. Sivaramakrishnan, D. Sing, K. Wagner, G.-D. Marleau, A.-M. Lagrange, R. Abuter, A. Amorim, R. Asensio-Torres, J.-P. Berger, H. Beust, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, M. S. Bordoni, et al.
The Astronomical Journal 167 (2) 64 (2024)
https://doi.org/10.3847/1538-3881/ad1689

A Tale of Two Molecules: The Underprediction of CO2 and Overprediction of PH3 in Late T and Y Dwarf Atmospheric Models

Samuel A. Beiler, Sagnick Mukherjee, Michael C. Cushing, J. Davy Kirkpatrick, Adam C. Schneider, Harshil Kothari, Mark S. Marley and Channon Visscher
The Astrophysical Journal 973 (1) 60 (2024)
https://doi.org/10.3847/1538-4357/ad6759

The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-floating Planets

Adam B. Langeveld, Aleks Scholz, Koraljka Mužić, Ray Jayawardhana, Daniel Capela, Loïc Albert, René Doyon, Laura Flagg, Matthew de Furio, Doug Johnstone, David Lafrèniere and Michael Meyer
The Astronomical Journal 168 (4) 179 (2024)
https://doi.org/10.3847/1538-3881/ad6f0c

A temperate super-Jupiter imaged with JWST in the mid-infrared

E. C. Matthews, A. L. Carter, P. Pathak, C. V. Morley, M. W. Phillips, S. Krishanth P. M., F. Feng, M. J. Bonse, L. A. Boogaard, J. A. Burt, I. J. M. Crossfield, E. S. Douglas, Th. Henning, J. Hom, C.-L. Ko, M. Kasper, A.-M. Lagrange, D. Petit dit de la Roche and F. Philipot
Nature 633 (8031) 789 (2024)
https://doi.org/10.1038/s41586-024-07837-8

Imaging detection of the inner dust belt and the four exoplanets in the HR 8799 system with JWST’s MIRI coronagraph

Anthony Boccaletti, Mathilde Mâlin, Pierre Baudoz, Pascal Tremblin, Clément Perrot, Daniel Rouan, Pierre-Olivier Lagage, Niall Whiteford, Paul Mollière, Rens Waters, Thomas Henning, Leen Decin, Manuel Güdel, Bart Vandenbussche, Olivier Absil, Ioannis Argyriou, Jeroen Bouwman, Christophe Cossou, Alain Coulais, René Gastaud, Alistair Glasse, Adrian M. Glauser, Inga Kamp, Sarah Kendrew, Oliver Krause, et al.
Astronomy & Astrophysics 686 A33 (2024)
https://doi.org/10.1051/0004-6361/202347912

Probing the Heights and Depths of Y Dwarf Atmospheres: A Retrieval Analysis of the JWST Spectral Energy Distribution of WISE J035934.06–540154.6

Harshil Kothari, Michael C. Cushing, Ben Burningham, Samuel A. Beiler, J. Davy Kirkpatrick, Adam C. Schneider, Sagnick Mukherjee and Mark S. Marley
The Astrophysical Journal 971 (2) 121 (2024)
https://doi.org/10.3847/1538-4357/ad583b

Breaking degeneracies in exoplanetary parameters through self-consistent atmosphere–interior modelling

C. Wilkinson, B. Charnay, S. Mazevet, A.-M. Lagrange, A. Chomez, V. Squicciarini, E. Panek and J. Mazoyer
Astronomy & Astrophysics 692 A113 (2024)
https://doi.org/10.1051/0004-6361/202348945

A long-period transiting substellar companion in the super-Jupiters to brown dwarfs mass regime and a prototypical warm-Jupiter detected by TESS

Matías I. Jones, Yared Reinarz, Rafael Brahm, Marcelo Tala Pinto, Jan Eberhardt, Felipe Rojas, Amaury H. M. J. Triaud, Arvind F. Gupta, Carl Ziegler, Melissa J. Hobson, Andrés Jordán, Thomas Henning, Trifon Trifonov, Martin Schlecker, Néstor Espinoza, Pascal Torres-Miranda, Paula Sarkis, Solène Ulmer-Moll, Monika Lendl, Murat Uzundag, Maximiliano Moyano, Katharine Hesse, Douglas A. Caldwell, Avi Shporer, Michael B. Lund, et al.
Astronomy & Astrophysics 683 A192 (2024)
https://doi.org/10.1051/0004-6361/202348147

Dark Matter halo parameters from overheated exoplanets via Bayesian hierarchical inference

María Benito, Konstantin Karchev, Rebecca K. Leane, Sven Põder, Juri Smirnov and Roberto Trotta
Journal of Cosmology and Astroparticle Physics 2024 (07) 038 (2024)
https://doi.org/10.1088/1475-7516/2024/07/038

Protosolar D-to-H Abundance and One Part per Billion PH3 in the Coldest Brown Dwarf

Melanie J. Rowland, Caroline V. Morley, Brittany E. Miles, Genaro Suarez, Jacqueline K. Faherty, Andrew J. Skemer, Samuel A. Beiler, Michael R. Line, Gordon L. Bjoraker, Jonathan J. Fortney, Johanna M. Vos, Sherelyn Alejandro Merchan, Mark Marley, Ben Burningham, Richard Freedman, Ehsan Gharib-Nezhad, Natasha Batalha, Roxana Lupu, Channon Visscher, Adam C. Schneider, T. R. Geballe, Aarynn Carter, Katelyn Allers, James Mang, Dániel Apai, et al.
The Astrophysical Journal Letters 977 (2) L49 (2024)
https://doi.org/10.3847/2041-8213/ad9744

JWST-TST High Contrast: JWST/NIRCam Observations of the Young Giant Planet β Pic b

Jens Kammerer, Kellen Lawson, Marshall D. Perrin, Isabel Rebollido, Christopher C. Stark, Tomas Stolker, Julien H. Girard, Laurent Pueyo, William O. Balmer, Kadin Worthen, Christine Chen, Roeland P. van der Marel, Nikole K. Lewis, Kimberly Ward-Duong, Jeff A. Valenti, Mark Clampin and C. Matt Mountain
The Astronomical Journal 168 (2) 51 (2024)
https://doi.org/10.3847/1538-3881/ad4ffe

Subaru/CHARIS High-resolution Mode Spectroscopy of the Brown Dwarf Companion HD 33632 Ab

Aidan B. Gibbs, Briley L. Lewis, Michael P. Fitzgerald, Timothy D. Brandt, Minghan Chen, Yiting Li, Rachel Bowens-Rubin, Rebecca Jensen-Clem and Benjamin A. Mazin
The Astrophysical Journal 973 (2) 119 (2024)
https://doi.org/10.3847/1538-4357/ad64cc

Are These Planets or Brown Dwarfs? Broadly Solar Compositions from High-resolution Atmospheric Retrievals of ∼10–30 M Jup Companions

Jerry W. Xuan, Chih-Chun Hsu, Luke Finnerty, Jason Wang, Jean-Baptiste Ruffio, Yapeng Zhang, Heather A. Knutson, Dimitri Mawet, Eric E. Mamajek, Julie Inglis, Nicole L. Wallack, Marta L. Bryan, Geoffrey A. Blake, Paul Mollière, Neda Hejazi, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Michael P. Fitzgerald, Nemanja Jovanovic, Joshua Liberman, et al.
The Astrophysical Journal 970 (1) 71 (2024)
https://doi.org/10.3847/1538-4357/ad4796

Atmospheric Abundances and Bulk Properties of the Binary Brown Dwarf Gliese 229Bab from JWST/MIRI Spectroscopy

Jerry W. Xuan, Marshall D. Perrin, Dimitri Mawet, Heather A. Knutson, Sagnick Mukherjee, Yapeng Zhang, Kielan K. W. Hoch, Jason J. Wang, Julie Inglis, Nicole L. Wallack and Jean-Baptiste Ruffio
The Astrophysical Journal Letters 977 (2) L32 (2024)
https://doi.org/10.3847/2041-8213/ad92f9

Direct imaging and dynamical mass of a benchmark T-type brown dwarf companion to HD 167665

A.-L. Maire, A. Leclerc, W. O. Balmer, S. Desidera, S. Lacour, V. D’Orazi, M. Samland, M. Langlois, E. Matthews, C. Babusiaux, P. Kervella, J.-B. Le Bouquin, D. Ségransan, R. Gratton, B. A. Biller, M. Bonavita, P. Delorme, S. Messina, S. Udry, M. Janson, Th. Henning, Z. Wahhaj, A. Zurlo, M. Bonnefoy, W. Brandner, et al.
Astronomy & Astrophysics 691 A263 (2024)
https://doi.org/10.1051/0004-6361/202451184

ExoLyn: A golden mean approach to multispecies cloud modeling in atmospheric retrieval

Helong Huang, Chris W. Ormel and Michiel Min
Astronomy & Astrophysics 691 A291 (2024)
https://doi.org/10.1051/0004-6361/202451112

The cool brown dwarf Gliese 229 B is a close binary

Jerry W. Xuan, A. Mérand, W. Thompson, Y. Zhang, S. Lacour, D. Blakely, D. Mawet, R. Oppenheimer, J. Kammerer, K. Batygin, A. Sanghi, J. Wang, J.-B. Ruffio, M. C. Liu, H. Knutson, W. Brandner, A. Burgasser, E. Rickman, R. Bowens-Rubin, M. Salama, W. Balmer, S. Blunt, G. Bourdarot, P. Caselli, G. Chauvin, et al.
Nature 634 (8036) 1070 (2024)
https://doi.org/10.1038/s41586-024-08064-x

A search for high-redshift direct-collapse black hole candidates in the PEARLS north ecliptic pole field

Armin Nabizadeh, Erik Zackrisson, Fabio Pacucci, Walter Peter Maksym, Weihui Li, Francesca Civano, Seth H. Cohen, Jordan C. J. D’Silva, Anton M. Koekemoer, Jake Summers, Rogier A. Windhorst, Nathan Adams, Christopher J. Conselice, Dan Coe, Simon P. Driver, Brenda Frye, Norman A. Grogin, Rolf A. Jansen, Madeline A. Marshall, Mario Nonino, Nor Pirzkal, Aaron Robotham, Michael J. Rutkowski, Russell E. Ryan, Scott Tompkins, et al.
Astronomy & Astrophysics 683 A58 (2024)
https://doi.org/10.1051/0004-6361/202347724

Precise Mass, Orbital Motion, and Stellar Properties of the M-dwarf Binary LP 349−25AB

Salvador Curiel, Gisela N. Ortiz-León, Amy J. Mioduszewski and Anthony B. Arenas-Martinez
The Astrophysical Journal 967 (2) 112 (2024)
https://doi.org/10.3847/1538-4357/ad3df6

The Polar Vortex Hypothesis: Evolving, Spectrally Distinct Polar Regions Explain Short- and Long-term Light-curve Evolution and Color–Inclination Trends in Brown Dwarfs and Giant Exoplanets

Nguyen Fuda and Dániel Apai
The Astrophysical Journal Letters 975 (2) L32 (2024)
https://doi.org/10.3847/2041-8213/ad87e9

Astrometric and photometric characterization of η Tel B combining two decades of observations

P. H. Nogueira, C. Lazzoni, A. Zurlo, T. Bhowmik, C. Donoso-Oliva, S. Desidera, J. Milli, S. Pérez, P. Delorme, A. Fernadez, M. Langlois, S. Petrus, G. Cabrera-Vives and G. Chauvin
Astronomy & Astrophysics 687 A301 (2024)
https://doi.org/10.1051/0004-6361/202449222

Unveiling the HD 95086 system at mid-infrared wavelengths with JWST/MIRI

Mathilde Mâlin, Anthony Boccaletti, Clément Perrot, Pierre Baudoz, Daniel Rouan, Pierre-Olivier Lagage, Rens Waters, Manuel Güdel, Thomas Henning, Bart Vandenbussche, Olivier Absil, David Barrado, Christophe Cossou, Leen Decin, Adrian M. Glauser, John Pye, Goran Olofsson, Alistair Glasse, Fred Lahuis, Polychronis Patapis, Pierre Royer, Silvia Scheithauer, Niall Whiteford, Eugene Serabyn, Elodie Choquet, et al.
Astronomy & Astrophysics 690 A316 (2024)
https://doi.org/10.1051/0004-6361/202450470

JADES: Spectroscopic Confirmation and Proper Motion for a T-Dwarf at 2 kpc

Kevin N. Hainline, Francesco D’Eugenio, Fengwu Sun, Jakob M. Helton, Brittany E. Miles, Mark S. Marley, Ben W. P. Lew, Jarron M. Leisenring, Andrew J. Bunker, Phillip A. Cargile, Stefano Carniani, Daniel J. Eisenstein, Ignas Juodžbalis, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Christina C. Williams and Christopher N. A. Willmer
The Astrophysical Journal 975 (1) 31 (2024)
https://doi.org/10.3847/1538-4357/ad76a7

HST astrometry of the closest brown dwarfs‐II. Improved parameters and constraints on a third body

L. R. Bedin, J. Dietrich, A. J. Burgasser, D. Apai, M. Libralato, M. Griggio, C. Fontanive and D. Pourbaix
Astronomische Nachrichten 345 (1) (2024)
https://doi.org/10.1002/asna.20230158

Atmospheric Retrievals of the Young Giant Planet ROXs 42B b from Low- and High-resolution Spectroscopy

Julie Inglis, Nicole L. Wallack, Jerry W. Xuan, Heather A. Knutson, Yayaati Chachan, Marta L. Bryan, Brendan P. Bowler, Aishwarya Iyer, Tiffany Kataria and Björn Benneke
The Astronomical Journal 167 (5) 218 (2024)
https://doi.org/10.3847/1538-3881/ad2771

HD 222237 b: a long-period super-Jupiter around a nearby star revealed by radial-velocity and Hipparcos–Gaia astrometry

Guang-Yao Xiao, Fabo Feng, Stephen A Shectman, C G Tinney, Johanna K Teske, B D Carter, H R A Jones, Robert A Wittenmyer, Matías R Díaz, Jeffrey D Crane, Sharon X Wang, J Bailey, S J O’Toole, Adina D Feinstein, Malena Rice, Zahra Essack, Benjamin T Montet, Avi Shporer and R Paul Butler
Monthly Notices of the Royal Astronomical Society 534 (3) 2858 (2024)
https://doi.org/10.1093/mnras/stae2151

Redshifts of candidate host galaxies of four fast X-ray transients using VLT/MUSE

Anne Inkenhaag, Peter G. Jonker, Andrew J. Levan, Jonathan Quirola-Vásquez, Franz E. Bauer and Deepak Eappachen
Astronomy & Astrophysics 689 A343 (2024)
https://doi.org/10.1051/0004-6361/202450249

Behind the mask: can HARMONI@ELT detect biosignatures in the reflected light of Proxima b?

Sophia R Vaughan, Jayne L Birkby, Niranjan Thatte, Alexis Carlotti, Mathis Houllé, Miguel Pereira-Santaella, Fraser Clarke, Arthur Vigan, Zifan Lin and Lisa Kaltenegger
Monthly Notices of the Royal Astronomical Society 528 (2) 3509 (2024)
https://doi.org/10.1093/mnras/stae242

The only inflated brown dwarf in an eclipsing white dwarf–brown dwarf binary: WD1032+011B

Jenni R French, Sarah L Casewell, Rachael C Amaro, Joshua D Lothringer, L C Mayorga, Stuart P Littlefair, Ben W P Lew, Yifan Zhou, Daniel Apai, Mark S Marley, Vivien Parmentier and Xianyu Tan
Monthly Notices of the Royal Astronomical Society 534 (3) 2244 (2024)
https://doi.org/10.1093/mnras/stae2121

New theoretical study of potassium perturbed by He and a comparison to laboratory spectra

N. F. Allard, J. F. Kielkopf, K. Myneni and J. N. Blakely
Astronomy & Astrophysics 683 A188 (2024)
https://doi.org/10.1051/0004-6361/202348711

TOI-1994b: A Low-mass Eccentric Brown Dwarf Transiting A Subgiant Star

Emma Page, Joshua Pepper, Duncan Wright, Joseph E. Rodriguez, Robert A. Wittenmyer, Stephen R. Kane, Brett Addison, Timothy Bedding, Brendan P. Bowler, Thomas Barclay, Karen A. Collins, Phil Evans, Jonathan Horner, Eric L. N. Jensen, Marshall C. Johnson, John Kielkopf, Ismael Mireles, Peter Plavchan, Samuel N. Quinn, S. Seager, Avi Shporer, Keivan G. Stassun, Stephanie Striegel, Joshua N. Winn, George Zhou and Carl Ziegler
The Astronomical Journal 167 (3) 109 (2024)
https://doi.org/10.3847/1538-3881/ad1a18

Microphysical Prescriptions for Parameterized Water Cloud Formation on Ultra-cool Substellar Objects

James Mang, Caroline V. Morley, Tyler D. Robinson and Peter Gao
The Astrophysical Journal 974 (2) 190 (2024)
https://doi.org/10.3847/1538-4357/ad6c4c

A new treatment of telluric and stellar features for medium-resolution spectroscopy and molecular mapping

F. Kiefer, M. Bonnefoy, B. Charnay, A. Boccaletti, A.-M. Lagrange, G. Chauvin, B. Bézard and M. Mâlin
Astronomy & Astrophysics 685 A120 (2024)
https://doi.org/10.1051/0004-6361/202347068

Four-of-a-kind? Comprehensive atmospheric characterisation of the HR 8799 planets with VLTI/GRAVITY

E. Nasedkin, P. Mollière, S. Lacour, M. Nowak, L. Kreidberg, T. Stolker, J. J. Wang, W. O. Balmer, J. Kammerer, J. Shangguan, R. Abuter, A. Amorim, R. Asensio-Torres, M. Benisty, J.-P. Berger, H. Beust, S. Blunt, A. Boccaletti, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, et al.
Astronomy & Astrophysics 687 A298 (2024)
https://doi.org/10.1051/0004-6361/202449328

JWST/NIRSpec Observations of the Coldest Known Brown Dwarf*

K. L. Luhman, P. Tremblin, C. Alves de Oliveira, S. M. Birkmann, I. Baraffe, G. Chabrier, E. Manjavacas, R. J. Parker and J. Valenti
The Astronomical Journal 167 (1) 5 (2024)
https://doi.org/10.3847/1538-3881/ad0b72

Near-infrared spectroscopic characterisation of Gaia ultra-cool dwarf candidates

T. Ravinet, C. Reylé, N. Lagarde, A. Burgasser, R. L. Smart, W. H. Moya, F. Marocco, R.-D. Scholz, W. J. Cooper, K. L. Cruz, J. G. Fernández-Trincado, D. Homeier and L. M. Sarro
Astronomy & Astrophysics 685 A6 (2024)
https://doi.org/10.1051/0004-6361/202347954

MINDS: JWST/NIRCam imaging of the protoplanetary disk PDS 70

V. Christiaens, M. Samland, Th. Henning, B. Portilla-Revelo, G. Perotti, E. Matthews, O. Absil, L. Decin, I. Kamp, A. Boccaletti, B. Tabone, G.-D. Marleau, E. F. van Dishoeck, M. Güdel, P.-O. Lagage, D. Barrado, A. Caratti o Garatti, A. M. Glauser, G. Olofsson, T. P. Ray, S. Scheithauer, B. Vandenbussche, L. B. F. M. Waters, A. M. Arabhavi, S. L. Grant, et al.
Astronomy & Astrophysics 685 L1 (2024)
https://doi.org/10.1051/0004-6361/202349089

High-precision Atmospheric Characterization of a Y Dwarf with JWST NIRSpec G395H Spectroscopy: Isotopologue, C/O Ratio, Metallicity, and the Abundances of Six Molecular Species

Ben W. P. Lew, Thomas Roellig, Natasha E. Batalha, Michael Line, Thomas Greene, Sagnick Murkherjee, Richard Freedman, Michael Meyer, Charles Beichman, Catarina Alves de Oliveira, Matthew De Furio, Doug Johnstone, Alexandra Z. Greenbaum, Mark Marley, Jonathan J. Fortney, Erick T. Young, Jarron Leisenring, Martha Boyer, Klaus Hodapp, Karl Misselt, John Stansberry and Marcia Rieke
The Astronomical Journal 167 (5) 237 (2024)
https://doi.org/10.3847/1538-3881/ad3425

Discovery of the Binarity of Gliese 229B, and Constraints on the System's Properties

Samuel Whitebook, Timothy D. Brandt, G. Mirek Brandt and Emily C. Martin
The Astrophysical Journal Letters 974 (2) L30 (2024)
https://doi.org/10.3847/2041-8213/ad7714

The Sonora Substellar Atmosphere Models. III. Diamondback: Atmospheric Properties, Spectra, and Evolution for Warm Cloudy Substellar Objects

Caroline V. Morley, Sagnick Mukherjee, Mark S. Marley, Jonathan J. Fortney, Channon Visscher, Roxana Lupu, Ehsan Gharib-Nezhad, Daniel Thorngren, Richard Freedman and Natasha Batalha
The Astrophysical Journal 975 (1) 59 (2024)
https://doi.org/10.3847/1538-4357/ad71d5

Uniform Forward-modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades

Spencer A. Hurt, Michael C. Liu, Zhoujian Zhang, Mark Phillips, Katelyn N. Allers, Niall R. Deacon, Kimberly M. Aller and William M. J. Best
The Astrophysical Journal 961 (1) 121 (2024)
https://doi.org/10.3847/1538-4357/ad0b12

Population of giant planets around B stars from the first part of the BEAST survey

P. Delorme, A. Chomez, V. Squicciarini, M. Janson, O. Flasseur, O. Schib, R. Gratton, A.-M. Lagrange, M. Langlois, L. Mayer, R. Helled, S. Reffert, F. Kiefer, B. Biller, G. Chauvin, C. Fontanive, Th. Henning, M. Kenworthy, G.-D. Marleau, D. Mesa, M. R. Meyer, C. Mordasini, S. C. Ringqvist, M. Samland, A. Vigan and G. Viswanath
Astronomy & Astrophysics 692 A263 (2024)
https://doi.org/10.1051/0004-6361/202451461

Revisiting Physical Parameters of the Benchmark Brown Dwarf LHS 6343 C through a Hubble Space Telescope/WFC3 Secondary-eclipse Observation

William Frost, Loïc Albert, René Doyon, Jonathan Gagné, Benjamin T. Montet, Clémence Fontanive, Étienne Artigau, John Asher Johnson, Billy Edwards and Björn Benneke
The Astrophysical Journal 972 (2) 199 (2024)
https://doi.org/10.3847/1538-4357/ad5da7

Eight New Substellar Hyades Candidates from the UKIRT Hemisphere Survey

Adam C. Schneider, Michael C. Cushing, Robert A. Stiller, Jeffrey A. Munn, Frederick J. Vrba, Justice Bruursema, Stephen J. Williams, Michael C. Liu, Alexia Bravo, Jacqueline K. Faherty, Austin Rothermich, Emily Calamari, Dan Caselden, Martin Kabatnik, Arttu Sainio, Thomas P. Bickle, William Pendrill, Nikolaj Stevnbak Andersen and Melina Thévenot
The Astronomical Journal 168 (4) 165 (2024)
https://doi.org/10.3847/1538-3881/ad71d0

Discovering Subsolar Metallicity Brown Dwarf Candidates in the Small Magellanic Cloud

Peter Zeidler, Elena Sabbi, Antonella Nota, Elena Manjavacas, Olivia C. Jones and Camilla Pacifici
The Astrophysical Journal 975 (1) 18 (2024)
https://doi.org/10.3847/1538-4357/ad779e

A Volume-limited Sample of Ultracool Dwarfs. II. The Substellar Age and Mass Functions in the Solar Neighborhood

William M. J. Best, Aniket Sanghi, Michael C. Liu, Eugene A. Magnier and Trent J. Dupuy
The Astrophysical Journal 967 (2) 115 (2024)
https://doi.org/10.3847/1538-4357/ad39ef

Simulating Brown Dwarf Observations for Various Mass Functions, Birthrates, and Low-mass Cutoffs

Yadukrishna Raghu, J. Davy Kirkpatrick, Federico Marocco, Christopher R. Gelino, Daniella C. Bardalez Gagliuffi, Jacqueline K. Faherty, Steven D. Schurr, Adam C. Schneider, Aaron M. Meisner, Marc J. Kuchner, Hunter Brooks and Jake Grigorian
The Astrophysical Journal 974 (2) 222 (2024)
https://doi.org/10.3847/1538-4357/ad62fc

The Carbon-to-oxygen Ratio in Cool Brown Dwarfs and Giant Exoplanets. I. The Benchmark Late-T Dwarfs GJ 570D, HD 3651B, and Ross 458C

Mark W. Phillips, Michael C. Liu and Zhoujian Zhang
The Astrophysical Journal 961 (2) 210 (2024)
https://doi.org/10.3847/1538-4357/ad06ba

JWST-TST High Contrast: Spectroscopic Characterization of the Benchmark Brown Dwarf HD 19467 B with the NIRSpec Integral Field Spectrograph

Kielan K. W. Hoch, Christopher A. Theissen, Travis S. Barman, Marshall D. Perrin, Jean-Baptiste Ruffio, Emily Rickman, Quinn M. Konopacky, Elena Manjavacas, William O. Balmer, Laurent Pueyo, Jens Kammerer, Roeland P. van der Marel, Nikole K. Lewis, Julien H. Girard, Sara Seager, Mark Clampin and C. Matt Mountain
The Astronomical Journal 168 (4) 187 (2024)
https://doi.org/10.3847/1538-3881/ad6cd3

A new atmospheric characterization of the sub-stellar companion HR 2562 B with JWST/MIRI observations

N. Godoy, E. Choquet, E. Serabyn, C. Danielski, T. Stolker, B. Charnay, S. Hinkley, P. O. Lagage, M. E. Ressler, P. Tremblin and A. Vigan
Astronomy & Astrophysics 689 A185 (2024)
https://doi.org/10.1051/0004-6361/202449951

Dynamically coupled kinetic chemistry in brown dwarf atmospheres – II. Cloud and chemistry connections in directly imaged sub-Jupiter exoplanets

Elspeth K H Lee, Xianyu Tan and Shang-Min Tsai
Monthly Notices of the Royal Astronomical Society 529 (3) 2686 (2024)
https://doi.org/10.1093/mnras/stae537

Combining Gaia and GRAVITY: Characterising five new directly detected substellar companions

T. O. Winterhalder, S. Lacour, A. Mérand, J. Kammerer, A.-L. Maire, T. Stolker, N. Pourré, C. Babusiaux, A. Glindemann, R. Abuter, A. Amorim, R. Asensio-Torres, W. O. Balmer, M. Benisty, J.-P. Berger, H. Beust, S. Blunt, A. Boccaletti, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, et al.
Astronomy & Astrophysics 688 A44 (2024)
https://doi.org/10.1051/0004-6361/202450018