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Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission

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Evidence of Gaia Enceladus Experiencing at Least Two Passages around the Milky Way*

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Abundance Measurements of the Metal-poor M Subdwarf LHS 174 Using High-resolution Optical Spectroscopy

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Stellar Loci. IX. Estimation of Stellar Parameters from CSST-like Photometry

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Optical spectroscopic signatures of the red giant evolutionary state

Ella Xi Wang, Melissa Ness, Thomas Nordlander, Andrew R Casey, Sarah Martell, Marc Pinsonneault, Xiaoting Fu, Dennis Stello, Claudia Reyes, Marc Hon, Madeleine McKenzie, Mingjie Jian, Jie Yu, Sven Buder, Karin Lind, Joss Bland-Hawthorn, Daniel B Zucker, Pradosh Barun Das, Richard de Grijs and Michael Hayden
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Red giant winds driven by Alfvén waves with magnetic diffusion

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The spectral energy distributions of very long-period Cepheids in the Milky Way, the Magellanic Clouds, M31, and M33

M. A. T. Groenewegen
Astronomy & Astrophysics 699 A102 (2025)
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CAPOS: The bulge Cluster APOgee Survey

Nicolás Barrera, Sandro Villanova, Doug Geisler, José G. Fernández-Trincado and Cesar Muñoz
Astronomy & Astrophysics 699 A128 (2025)
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Revisiting inelastic Cu + H collisions and the non-LTE Galactic evolution of copper

S. Caliskan, A. M. Amarsi, M. Racca, I. Koutsouridou, P. S. Barklem, K. Lind and S. Salvadori
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J. S. Thomsen, A. Miglio, K. Brogaard, J. Montalbán, M. Tailo, W. E. van Rossem, G. Casali, D. Jones, T. Arentoft, L. Casagrande, D. Sebastian, G. Buldgen, A. H. M. J. Triaud, M. Matteuzzi, A. Stokholm, M. N. Lund, B. Mosser, P. F. L. Maxted, J. Southworth, J. T. Gadeberg, N. Koivisto, Z. Gray, V. Pinter, K. Matilainen, A. A. Djupvik, et al.
Astronomy & Astrophysics 699 A152 (2025)
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Chemical composition of asymptotic giant branch stars in Galactic open clusters: Implications for the initial-final mass relation

C. Abia, P. Marigo, I. Domínguez, S. Cristallo, P. de Laverny, O. Straniero and M. Romero-Gómez
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Short- and long-term variations of the high mass accretion rate classical T Tauri star DR Tau

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The Pristine survey

Zhen Yuan, Tadafumi Matsuno, Tatyana M. Sitnova, Nicolas F. Martin, Rodrigo A. Ibata, Anke Ardern-Arentsen, Raymond Carlberg, Jonay I. González Hernández, Erika Holmbeck, Georges Kordopatis, Fangzhou Jiang, Khyati Malhan, Julio F. Navarro, Federico Sestito, Kim A. Venn, Akshara Viswanathan and Sara Vitali
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The most metal-poor tail of the Galactic halo: Hypothesis for its origin from precise spectral analysis

Riano E. Giribaldi, Laura Magrini, Martina Rossi, Anish M. Amarsi, Donatella Romano and Davide Massari
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Lux: A Generative, Multioutput, Latent-variable Model for Astronomical Data with Noisy Labels

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oMEGACat. V. Helium Enrichment in ω Centauri as a Function of Metallicity

C. Clontz, A. C. Seth, Z. 梓先 Wang 王, S. O. Souza, M. Häberle, M. S. Nitschai, N. Neumayer, M. Latour, A. P. Milone, A. Feldmeier-Krause, N. Kacharov, M. Libralato, A. Bellini, G. van de Ven and M. Alfaro-Cuello
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The GALAH survey: Data release 4

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https://doi.org/10.1017/pasa.2025.26

Li-rich Unevolved Stars from LAMOST-MRS

Ze-Ming Zhou, Jian-Rong Shi, Shao-Lan Bi, Hong-Liang Yan, Kai-Ke Pan, Ming-Yi Ding, Jiang-Tao Wang, Shuai Liu, Chun-Qian Li, Yu-Tao Zhou, Jing-Hua Zhang, Xiang-Song Fang, Xian-Fei Zhang, Tian-Yi Chen, Xiao-Jin Xie, Yao-Jia Tang, Tai-Sheng Yan and Guo Li
The Astrophysical Journal 986 (1) 44 (2025)
https://doi.org/10.3847/1538-4357/add2fe

Coupling 1D stellar evolution with 3D-hydrodynamical simulations on-the-fly – III: stellar evolution at different metallicities

Yixiao Zhou, Jakob L Rørsted, Achim Weiss, Andreas C S Jørgensen, Cis Lagae, Luisa F Rodríguez Díaz, Yaguang Li, Mark L Winther, Jens R Larsen, Jørgen Christensen-Dalsgaard, Oleg Kochukhov, Karen R Pollard and Tanda Li
Monthly Notices of the Royal Astronomical Society 540 (4) 3400 (2025)
https://doi.org/10.1093/mnras/staf937

The TOI-2427 system: Two close-in planets orbiting a late K-dwarf star

H. Schmerling, E. Goffo, S. Grziwa, C. M. Persson, D. Gandolfi, M. Pätzold, A. Hatzes, C. Hellier, J. Livingston, L. Acuña, A. Aguichine, E. Costanza, H. J. Deeg, T. Masseron, E. Palle, W. Cochran, G. Nowak, D. Jankowski, K. Goździewski, R. Luque, S. Mathur, D. B. Palakkatharappil and R. A. García
Astronomy & Astrophysics 699 A185 (2025)
https://doi.org/10.1051/0004-6361/202452620

The Bulge Cluster Origin (BulCO) survey at the ESO-VLT: Probing the early history of the Milky Way assembly. Design and first results in Liller 1

F. R. Ferraro, L. Chiappino, A. Bartolomei, L. Origlia, C. Fanelli, B. Lanzoni, C. Pallanca, M. Loriga, S. Leanza, E. Valenti, D. Romano, A. Mucciarelli, D. Massari, M. Cadelano, E. Dalessandro, C. Crociati and R. M. Rich
Astronomy & Astrophysics 696 A179 (2025)
https://doi.org/10.1051/0004-6361/202554092

Oxygen Isotope Ratios in Hydrogen-deficient Carbon Stars: A Correlation with Effective Temperature and Implications for White Dwarf Merger Outcomes

Advait Mehla, Mansi M. Kasliwal, Viraj Karambelkar, Patrick Tisserand, Courtney Crawford, Geoffrey Clayton, Jamie Soon and Varun Bhalerao
Publications of the Astronomical Society of the Pacific 137 (4) 044201 (2025)
https://doi.org/10.1088/1538-3873/adc0bf

Refractory and Volatile Species in the UV-to-IR Transmission Spectrum of Ultra-hot Jupiter WASP-178b with HST and JWST

Joshua D. Lothringer, Katherine A. Bennett, David K. Sing, Brian Kehoe-Seamons, Zafar Rustamkulov, Henrique Reggiani, Kevin C. Schlaufman, Patrick McCreery, Seti Norris, Peter Hauschildt, Ceiligh Cacho-Negrete, Amélie Gressier, Néstor Espinoza, Cyril Gapp, Thomas M. Evans-Soma, Kevin B. Stevenson, Hannah Wakeford, Neale Gibson, Jamie Wilson and Nikolay Nikolov
The Astronomical Journal 169 (5) 274 (2025)
https://doi.org/10.3847/1538-3881/adc117

Improving the stellar age determination through joint modeling of binarity and asteroseismology

D. H. Grossmann, P. G. Beck, S. Mathur, C. Johnston, D. Godoy-Rivera, J. C. Zinn, S. Cassisi, B. Liagre, T. Masseron, R. A. García, A. Hanslmeier, N. Muntean, L. S. Schimak, L. Steinwender and D. Stello
Astronomy & Astrophysics 696 A42 (2025)
https://doi.org/10.1051/0004-6361/202452626

Comparative study of small-scale magnetic fields on ξ Boo A using optical and near-infrared spectroscopy

A. Hahlin, O. Kochukhov, P. Chaturvedi, E. Guenther, A. Hatzes, U. Heiter, A. Lavail, E. Nagel, N. Piskunov, K. Pouilly, A. D. Rains, A. Reiners, M. Rengel, U. Seeman and D. Shulyak
Astronomy & Astrophysics 696 A4 (2025)
https://doi.org/10.1051/0004-6361/202453016

AT2021uey: A planetary microlensing event outside the Galactic bulge

M. Ban, P. Voloshyn, R. Adomavic̆ienė, E. Bachelet, V. Bozza, S. M. Brincat, I. Bruni, U. Burgaz, J. M. Carrasco, A. Cassan, V. C̆epas, F. Cusano, M. Dennefeld, M. Dominik, F. Dubois, R. Figuera Jaimes, A. Fukui, C. Galdies, A. Garofalo, M. Hundertmark, I. Ilyin, K. Kruszyńska, V. Kulijanishvili, T. Kvernadze, L. Logie, et al.
Astronomy & Astrophysics 697 A57 (2025)
https://doi.org/10.1051/0004-6361/202554236

Tracing chemical depletion in evolved binaries hosting second-generation transition discs

Maksym Mohorian, Devika Kamath, Meghna Menon, Anish M Amarsi, Hans Van Winckel, Claudia Fava and Kateryna Andrych
Monthly Notices of the Royal Astronomical Society 538 (3) 1339 (2025)
https://doi.org/10.1093/mnras/staf375

First Doppler image and starspot-corrected orbit for λ Andromedae

Ö. Adebali, K. G. Strassmeier, I. V. Ilyin, M. Weber, D. Gruner and Zs. Kővári
Astronomy & Astrophysics 695 A89 (2025)
https://doi.org/10.1051/0004-6361/202453073

A Data-driven M Dwarf Model and Detailed Abundances for ​​​​​​∼17,000 M Dwarfs in SDSS-V

Aida Behmard, Melissa K. Ness, Andrew R. Casey, Ruth Angus, Katia Cunha, Diogo Souto, Yuxi(Lucy) Lu and Jennifer A. Johnson
The Astrophysical Journal 982 (1) 13 (2025)
https://doi.org/10.3847/1538-4357/adaf1f

Mapping the Milky Way with Gaia Bp/Rp spectra

Xianhao Ye, Wenbo Wu, Carlos Allende Prieto, David S. Aguado, Jingkun Zhao, Jonay I. González Hernández, Rafael Rebolo, Gang Zhao, Zhuohan Li, Carlos del Burgo and Yuqin Chen
Astronomy & Astrophysics 695 A75 (2025)
https://doi.org/10.1051/0004-6361/202452871

Stellar obliquities of eight close-in gas giant exoplanets

J. Zak, H. M. J. Boffin, E. Sedaghati, A. Bocchieri, Z. Balkoova, M. Skarka and P. Kabath
Astronomy & Astrophysics 694 A91 (2025)
https://doi.org/10.1051/0004-6361/202452171

Chromospherically active stars: Chemical composition of photospheres in 20 RS CVn stars

B. Bale, G. Tautvaišienė, R. Minkevičiūtė, A. Drazdauskas, Š. Mikolaitis, E. Stonkutė and M. Ambrosch
Astronomy & Astrophysics 696 A23 (2025)
https://doi.org/10.1051/0004-6361/202452780

Observational constraints on the origin of the elements. IX. 3D NLTE abundances of metals in the context of Galactic Chemical Evolution models and 4MOST

Nicholas Storm, Maria Bergemann, Philipp Eitner, Richard Hoppe, Alex J Kemp, Ashley J Ruiter, Hans-Thomas Janka, Andre Sieverding, Selma E de Mink, Ivo R Seitenzahl and Evans K Owusu
Monthly Notices of the Royal Astronomical Society 538 (4) 3284 (2025)
https://doi.org/10.1093/mnras/staf472

A Systematic NLTE Study of Very Metal-poor Stars with Metallicity down to −4.3 dex. I. Global Stellar Parameters Based on High-resolution Spectra

Jianrong Shi, Gang Zhao, Shuai Liu, et al.
The Astrophysical Journal 983 (2) 127 (2025)
https://doi.org/10.3847/1538-4357/adc127

From Misaligned Sub-Saturns to Aligned Brown Dwarfs: The Highest M p /M * Systems Exhibit Low Obliquities, Even around Hot Stars*

Jace Rusznak, Xian-Yu Wang, Malena Rice and Songhu Wang
The Astrophysical Journal Letters 983 (2) L42 (2025)
https://doi.org/10.3847/2041-8213/adc129

Physical parameters of stars in NGC 6397 using ANN-based interpolation and full spectrum fitting

Nitesh Kumar, Philippe Prugniel and Harinder P. Singh
New Astronomy 119 102416 (2025)
https://doi.org/10.1016/j.newast.2025.102416

Chemical abundances in the Milky Way's nuclear stellar disc

N. Ryde, G. Nandakumar, R. Albarracín, M. Schultheis, A. Rojas-Arriagada and M. Zoccali
Astronomy & Astrophysics 699 A176 (2025)
https://doi.org/10.1051/0004-6361/202554791

Searching for R-process-enhanced Stars in the LAMOST Survey. II. Two New r-II Stars in the Milky Way Disk

Xiao-Jin Xie, Jianrong Shi, Hong-Liang Yan, Tian-Yi Chen, Carlos Allende Prieto, Timothy C. Beers, Shi-Lun Jin, Shuai Liu, Chun-Qian Li, Ze-Ming Zhou, Ming-Yi Ding and Yao-Jia Tang
The Astrophysical Journal 984 (2) 176 (2025)
https://doi.org/10.3847/1538-4357/adc807

Ariel stellar characterisation

M. Tsantaki, L. Magrini, C. Danielski, D. Bossini, D. Turrini, N. Moedas, C. P. Folsom, H. Ramler, K. Biazzo, T. L. Campante, E. Delgado-Mena, R. da Silva, S. G. Sousa, S. Benatti, G. Casali, K. G. Hełminiak, M. Rainer and N. Sanna
Astronomy & Astrophysics 697 A102 (2025)
https://doi.org/10.1051/0004-6361/202453059

Surface brightness–colour relations of Cepheids calibrated by optical interferometry

M. C. Bailleul, N. Nardetto, V. Hocdé, P. Kervella, W. Gieren, J. Storm, G. Pietrzyński, A. Gallenne, A. Mérand, G. Bras, A. Recio Blanco, P. de Laverny, P. A. Palicio, A. Afanasiev and W. Kiviaho
Astronomy & Astrophysics 698 A46 (2025)
https://doi.org/10.1051/0004-6361/202553740

New kinematic map of the Milky Way bulge

C. Quezada, M. Zoccali, E. Valenti, A. Rojas Arriagada, A. Renzini, O. A. Gonzalez, A. Mucciarelli, M. Rejkuba, F. Surot and A. Valenzuela Navarro
Astronomy & Astrophysics 702 A164 (2025)
https://doi.org/10.1051/0004-6361/202555412