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The Astronomical Journal 170 (1) 47 (2025)
https://doi.org/10.3847/1538-3881/addd21

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

ELemental Abundances of Planets and Brown Dwarfs Imaged around Stars (ELPIS). II. The Jupiter-like Inhomogeneous Atmosphere of the First Directly Imaged Planetary-mass Companion 2MASS 1207 b

Zhoujian 周健 Zhang 张, Paul Mollière, Jonathan J. Fortney and Mark S. Marley
The Astronomical Journal 170 (2) 64 (2025)
https://doi.org/10.3847/1538-3881/addfcb

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
Astronomy & Astrophysics 698 A19 (2025)
https://doi.org/10.1051/0004-6361/202553936

JWST/MIRI observations of the young TWA 27 system: Hydrocarbon disk chemistry, silicate clouds, and evidence of a circumplanetary disk

P. Patapis, M. Morales-Calderón, A. M. Arabhavi, H. Kühnle, D. Gasman, G. Cugno, P. Mollière, E. Matthews, M. Mâlin, N. Whiteford, P.-O. Lagage, R. Waters, M. Guedel, Th. Henning, B. Vandenbussche, O. Absil, I. Argyriou, D. Barrado, P. Baudoz, A. Boccaletti, J. Bouwman, C. Cossou, A. Coulais, L. Decin, R. Gastaud, et al.
Astronomy & Astrophysics 704 A5 (2025)
https://doi.org/10.1051/0004-6361/202556296

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

The COBREX archival survey: Improved constraints on the occurrence rate of wide-orbit substellar companions

V. Squicciarini, J. Mazoyer, A.-M. Lagrange, A. Chomez, P. Delorme, O. Flasseur, F. Kiefer, S. Bergeon, D. Albert and N. Meunier
Astronomy & Astrophysics 693 A54 (2025)
https://doi.org/10.1051/0004-6361/202452310

The mid-infrared spectrum of β Pictoris b

M. Houllé, F. Millour, P. Berio, J. Scigliuto, S. Lacour, B. Lopez, F. Allouche, J.-C. Augereau, D. Blain, M. Bonnefoy, M. Carbillet, G. Chauvin, J. Leftley, A. Matter, J. Milli, P. Mollière, E. Nasedkin, M. Nowak, P. Palma-Bifani, É. Pantin, P. Priolet, M. Ravet, J. Woillez, W. Balmer, P. Boley, et al.
Astronomy & Astrophysics 704 A182 (2025)
https://doi.org/10.1051/0004-6361/202453323

Three Brown Dwarfs Masquerading as High-redshift Galaxies in JWST Observations

Zhijun Tu, Shu Wang, Xiaodian Chen and Jifeng Liu
The Astrophysical Journal 980 (2) 230 (2025)
https://doi.org/10.3847/1538-4357/adaf9f

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

Dark dwarfs: dark matter-powered sub-stellar objects awaiting discovery at the galactic center

Djuna Croon, Jeremy Sakstein, Juri Smirnov and Jack Streeter
Journal of Cosmology and Astroparticle Physics 2025 (07) 019 (2025)
https://doi.org/10.1088/1475-7516/2025/07/019

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

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

Sagnick Mukherjee, Jonathan J. Fortney, Nicholas F. Wogan, David K. Sing and Kazumasa Ohno
The Astrophysical Journal 985 (2) 209 (2025)
https://doi.org/10.3847/1538-4357/adc7b3

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
Astronomy & Astrophysics 698 A113 (2025)
https://doi.org/10.1051/0004-6361/202452302

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)
https://doi.org/10.3847/2041-8213/addbde

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

Savanah K. Turner, Denise C. Stephens, Conner B. Scoresby and Josh A. Miller
The Astronomical Journal 170 (1) 43 (2025)
https://doi.org/10.3847/1538-3881/adda2a

Resolving the unresolved: Discovery and dynamical masses of the brown dwarf binary DE1756−45

P. F. Lazorenko, J. Sahlmann, M. Mayor, E. L. Martin, M.-R. Zapatero Osorio and J. Girard
Astronomy & Astrophysics 704 A291 (2025)
https://doi.org/10.1051/0004-6361/202557011

A planetary-mass candidate imaged in the Young Suns Exoplanet Survey

Pengyu Liu, Matthew A. Kenworthy, Beth A. Biller, Alex Wallace, Tomas Stolker, Sebastiaan Haffert, Christian Ginski, Eric E. Mamajek, Alfred Castro-Ginard, Tiffany Meshkat, Mark J. Pecaut, Maddalena Reggiani, Jared R. Males, Laird M. Close, Olivier Guyon, Isabella Doty, Kyle Van Gorkom, Alex Hedglen, Maggie Kautz, Jay Kueny, Joshua Liberman, Jialin Li, Joseph D. Long, Jennifer Lumbres, Eden McEwen, et al.
Astronomy & Astrophysics 699 A78 (2025)
https://doi.org/10.1051/0004-6361/202449582

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

T. O. Winterhalder, J. Kammerer, S. Lacour, A. Mérand, M. Nowak, T. Stolker, W. O. Balmer, G.-D. Marleau, R. Abuter, A. Amorim, R. Asensio-Torres, J.-P. Berger, H. Beust, S. Blunt, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, A. Chavez, E. Choquet, et al.
Astronomy & Astrophysics 700 A4 (2025)
https://doi.org/10.1051/0004-6361/202554766

Direct imaging discovery of a young giant planet orbiting on Solar System scales

T. Stolker, M. Samland, L. B. F. M. Waters, M. E. van den Ancker, W. O. Balmer, S. Lacour, M. L. Sitko, J. J. Wang, M. Nowak, A.-L. Maire, J. Kammerer, G. P. P. L. Otten, R. Abuter, A. Amorim, M. Benisty, J.-P. Berger, H. Beust, S. Blunt, A. Boccaletti, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, et al.
Astronomy & Astrophysics 700 A21 (2025)
https://doi.org/10.1051/0004-6361/202555064

Atmospheric model-trained machine learning selection and classification of ultracool TY dwarfs

Ankit Biswas
Monthly Notices of the Royal Astronomical Society 541 (2) 1670 (2025)
https://doi.org/10.1093/mnras/staf1084

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini and A. Burgasser
Astronomische Nachrichten 346 (9) (2025)
https://doi.org/10.1002/asna.70042

J1250+0455AB an ultracool binary in a hierarchical triple system

Sayan Baig, R L Smart, Hugh R A Jones, E Pinna, A Sozzetti, Gemma Cheng, Felice Cusano, Fabio Rossi, Cedric Plantet and Guido Agapito
Monthly Notices of the Royal Astronomical Society 542 (1) 310 (2025)
https://doi.org/10.1093/mnras/staf1234

A Metal-poor Atmosphere with a Hot Interior for a Young Sub-Neptune Progenitor: JWST/NIRSpec Transmission Spectrum of V1298 Tau b

Saugata Barat, Jean-Michel Désert, Sagnick Mukherjee, Jayesh M. Goyal, Qiao Xue, Yui Kawashima, Allona Vazan, William Misener, Hilke E. Schlichting, Jonathan J. Fortney, Jacob L. Bean, Swaroop Avarsekar, Gregory W. Henry, Robin Baeyens, Michael R. Line, John H. Livingston, Trevor David, Erik A. Petigura, James T. Sikora, Hinna Shivkumar, Adina D. Feinstein and Antonija Oklopčić
The Astronomical Journal 170 (3) 165 (2025)
https://doi.org/10.3847/1538-3881/adec89

Probing the Outskirts of M Dwarf Planetary Systems with a Cycle 1 JWST NIRCam Coronagraphy Survey

Ellis Bogat, Joshua E. Schlieder, Kellen D. Lawson, Yiting Li, Jarron M. Leisenring, Michael R. Meyer, William Balmer, Thomas Barclay, Charles A. Beichman, Geoffrey Bryden, Per Calissendorff, Aarynn L. Carter, Matthew De Furio, Julien H. Girard, Thomas P. Greene, Tyler D. Groff, Jens Kammerer, Jorge Llop-Sayson, Michael W. McElwain, Marcia J. Rieke and Marie Ygouf
The Astronomical Journal 170 (4) 225 (2025)
https://doi.org/10.3847/1538-3881/adfc75

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

Dori Blakely, Doug Johnstone, Tomas Stolker, Myriam Benisty, Jens Kammerer, Brodie J. Norfolk, William Thompson and Jean-Philippe Berger
The Astronomical Journal 169 (3) 152 (2025)
https://doi.org/10.3847/1538-3881/ada944

The TW Hydrae Association is a cluster chain of Sco-Cen

N. Miret-Roig, J. Alves, S. Ratzenböck, P. A. B. Galli, H. Bouy, F. Figueras, J. Großschedl, S. Meingast, L. Posch, A. Rottensteiner, C. Swiggum and N. Wagner
Astronomy & Astrophysics 694 A60 (2025)
https://doi.org/10.1051/0004-6361/202452558

Orbits and Masses for 156 Companions from Combined Astrometry and Radial Velocities, and a Validation of Gaia Non-single-star Solutions

Qier An, Timothy D. Brandt, G. Mirek Brandt and Alexander Venner
The Astrophysical Journal Supplement Series 280 (2) 61 (2025)
https://doi.org/10.3847/1538-4365/adfa99

Disequilibrium Chemistry, Diabatic Thermal Structure, and Clouds in the Atmosphere of COCONUTS-2b

Zhoujian 周健 Zhang 张, Sagnick Mukherjee, Michael C. Liu, Jonathan J. Fortney, Emily Mader, William M. J. Best, Trent J. Dupuy, Sandy K. Leggett, Theodora Karalidi, Michael R. Line, Mark S. Marley, Caroline V. Morley, Mark W. Phillips, Robert J. Siverd and Joseph A. Zalesky
The Astronomical Journal 169 (1) 9 (2025)
https://doi.org/10.3847/1538-3881/ad8b2d

Classifying Cool Dwarfs: Comprehensive Spectral Typing of Field and Peculiar Dwarfs Using Machine Learning

Tianxing Zhou, Christopher A. Theissen, S. Jean Feeser, William M. J. Best, Adam J. Burgasser, Kelle L. Cruz and Lexu Zhao
The Astrophysical Journal 992 (1) 93 (2025)
https://doi.org/10.3847/1538-4357/adfb7d

Diversity of Cold Worlds: Predicted Near-to-mid-infrared Spectral Signatures of a Cold Brown Dwarf with Potential Auroral Heating

Genaro Suárez, Jacqueline K. Faherty, Ben Burningham, Caroline V. Morley, Johanna M. Vos, Brianna Lacy, Melanie J. Rowland, Adam C. Schneider, Sherelyn Alejandro Merchan, Daniella C. Bardalez Gagliuffi, Thomas P. Bickle, Eileen C. Gonzales, Rocio Kiman, Austin Rothermich and Niall Whiteford
The Astrophysical Journal 993 (2) 165 (2025)
https://doi.org/10.3847/1538-4357/ae0e6a

Disentangling disc and atmospheric signatures of young brown dwarfs with JWST/NIRSpec

D. González Picos, S. de Regt, S. Gandhi, N. Grasser and I. A. G. Snellen
Astronomy & Astrophysics 703 A65 (2025)
https://doi.org/10.1051/0004-6361/202555669

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.
The Astronomical Journal 169 (1) 30 (2025)
https://doi.org/10.3847/1538-3881/ad9265

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

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

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

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

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

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

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

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

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

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

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

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