Leiden Preprints

arXiv:2602.10260v1 [pdf]
Title: Cold and eccentric: a high-spectral resolution view of 51 Eri b with VLT/HiRISE
Authors: A. Denis, A. Vigan, G. Chauvin, A. Lacquement, H. Beust, M. Ravet, J. Costes, A. Radcliffe, S. Martos, W. Balmer, T. Stolkern, P. Palma Bifani, B. Rajpoot, A. Simonnin, S. Petrus, T. Forveille, M. Janson, A. Reiners, N. Godoy, D. Cont, L. Nortmann, K. Hoy, A. Zurlo, H. Anwand-Heerwart, Y. Charles, A. Costille, M. El Morsy, J. Garcia, M. Houllé, M. Lopez, G. Murray, E. Muslimov, G. P. P. L. Otten, J. Paufique, M. Phillips, U. Seemann, A. Viret, G. Zins
Comments: 9 pages, 8 figures, Accepted for publication in A&A
Subjects: astro-ph.EP
arXiv:2602.06952v1 [pdf]
Title: Mapping plasma properties of Cassiopeia A with XRISM/Resolve: a Bayesian analysis via UltraSPEX
Authors: Manan Agarwal, Jacco Vink, Liyi Gu, Paul P. Plucinsky, Aya Bamba, Toshiki Sato, Daniele Rogantini, Yuken Ohshiro
Comments: Submitted version (33 pages, 21 figures). Accepted for publication in ApJ
Subjects: astro-ph.HE
arXiv:2602.05383v1 [pdf]
Title: A Chemistry-First Centered Icy Chemical Inventory of Protostellar Sources with JWST
Authors: Andrew M. Turner, Yao-Lun Yang, Rachel Gross, Nami Sakai, Ralf I. Kaiser
Comments: Accepted to The Astrophysical Journal
Subjects: astro-ph.GA, astro-ph.SR
arXiv:2602.05318v1 [pdf]
Title: The sub-arcsecond ILT view of the Boötes Deep Field: A link between low-frequency kiloparsec radio morphology and AGN driven ionised outflows
Authors: Emmy L. Escott, Leah K. Morabito, Frits Sweijen, Chris M. Harrison, James Petley, Jurjen M. G. H. J. de Jong, Reinout J. van Weeren, Thomas S. Higginson, Isabella Prandoni, George Miley, Huub J. A. Röttgering
Comments: 20 pages, 13 figures, accepted for publication in MNRAS
Subjects: astro-ph.GA
arXiv:2602.06024v1 [pdf]
Title: Water absorption confirms cool atmospheres in two little red dots
Authors: Bingjie Wang, Joel Leja, Ivo Labbe, Jenny E. Greene, Hanpu Liu, Anna de Graaff, Raphael E. Hviding, Jorryt Matthee, Eliot Quataert, Rachel Bezanson, Leindert A. Boogaard, Gabriel Brammer, Adam J. Burgasser, Yi-Xian Chen, Nikko J. Cleri, Sam E. Cutler, Pratika Dayal, Lukas J. Furtak, Seiji Fujimoto, Karl Glazebrook, Andy D. Goulding, Jakob M. Helton, Michaela Hirschmann, Yan-Fei Jiang, Vasily Kokorev, Yilun Ma, Tim B. Miller, Rohan P. Naidu, Pascal Oesch, Richard Pan, Casey Papovich, Sedona H. Price, Hans-Walter Rix, David J. Setton, Wendy Q. Sun, John R. Weaver, Katherine E. Whitaker, Adi Zitrin
Comments: Submitted; 6 + 12 pages, 3 + 7 figures, 2 tables
Subjects: astro-ph.GA
arXiv:2602.04374v1 [pdf]
Title: Atom Addition Formation of Thionylimide (HNSO) on Interstellar Dust Grains: Chemical routes requiring oxygen and nitrogen atom surface diffusion
Authors: Juan Carlos del Valle, Miguel Sanz-Novo, Johannes Kästner, Kenji Furuya, Víctor M. Rivilla, Rafael Martín-Domńech, Germán Molpeceres
Comments: Accepted in ACSESC
Subjects: astro-ph.GA, physics.chem-ph
arXiv:2602.05094v1 [pdf]
Title: Shocks, Winds, and a Torus: The Large Binocular Telescope Interferometer (LBTI) Resolves the Active Nucleus of NGC 4151
Authors: Jacob W. Isbell, Steve Ertel, Makoto Kishimoto, Gerd Weigelt, Jörg-Uwe Pott, Jared Carlson, Qixiang Duan, Violeta Gámez Rosas, Walter Jaffe, James Leftley, Daniel May, Romain. G. Petrov, Jennifer Power, Hélène Rousseau, Justin Rupert
Comments: Accepted for publication in ApJ. 13 pages, 6 figures
Subjects: astro-ph.GA
arXiv:2602.05050v1 [pdf]
Title: ICM-SHOX III. The case of MACS J0018.5+1626, a radio relic that looks like a radio halo?
Authors: P. Domínguez-Fernández, J. A. ZuHone, E. M. Silich, E. Bellomi, J. Sayers, T. Mroczkowski, A. Botteon, R. J. van Weeren, L. Hernquist, G. Brunetti, J. Golec, S. Gupta
Comments: 35 pages, 17 figures, submitted to ApJ, comments welcome
Subjects: astro-ph.HE
arXiv:2602.04979v1 [pdf]
Title: ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization
Authors: Feige Wang, Jaclyn B. Champagne, Jiamu Huang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Haowen Zhang, Tiago Costa, Roberto Decarli, Melanie Habouzit, Fengwu Sun, Eduardo Banados, Xiangyu Jin, Koki Kakiichi, Romain A. Meyer, Yunjing Wu, Silvia Belladitta, Laura Blecha, Sarah E. I. Bosman, Zheng Cai, Thomas Connor, Frederick B. Davies, Anna-Christina Eilers, Zoltan Haiman, Hyunsung D. Jun, Mingyu Li, Zihao Li, Weizhe Liu, Alessandro Lupi, Jianwei Lyu, Chiara Mazzucchelli, Masafusa Onoue, Maria Pudoka, Sofia Rojas-Ruiz, Jan-Torge Schindler, Yue Shen, Wei Leong Tee, Benny Trakhtenbrot, Maxime Trebitsch, Marianne Vestergaard, Marta Volonteri, Fabian Walter, Huanian Zhang, Siwei Zou
Comments: submitted to AAS journal in Nov. 2025
Subjects: astro-ph.GA, astro-ph.CO, astro-ph.HE
arXiv:2602.04974v1 [pdf]
Title: Clustering of z~6.6 Quasars and [O III] Emitters Constrains Host Halo Masses and Duty Cycles in 25 ASPIRE Fields
Authors: Jiamu Huang, Joseph Hennawi, Elia Pizzati, Feige Wang, Jinyi Yang, Jaclyn B. Champagne, Xiaohui Fan, Eduardo Bañados, Xiangyu Jin, Koki Kakiichi, Romain A. Meyer, Fengwu Sun, Yunjing Wu, Haowen Zhang, Chiara Mazzucchelli, Anna-Christina Eilers, Maria Pudoka, Huanian Zhang, Jan-Torge Schindler, Matthieu Schaller, Joop Schaye, Ben Snyder, Yi Kang, Silvia Onorato
Comments: 23 pages, 10 figures, submitted to MNRAS
Subjects: astro-ph.GA
arXiv:2602.04968v1 [pdf]
Title: Multi-spin stellar velocity maps of the most massive galaxies
Authors: Davor Krajnovic, Eric Emsellem, Roland Bacon, Leindert A. Boogaard, Peter M. Weilbacher, Lutz Wisotzki
Comments: Accepted for publication in A&A. 24 pages, 13 figures, 2 tables. Supplementary material available through the link in the paper
Subjects: astro-ph.GA
arXiv:2602.04967v1 [pdf]
Title: Abundant hydrocarbons in a buried galactic nucleus with signs of carbonaceous grain and polycyclic aromatic hydrocarbon processing
Authors: I. García-Bernete, M. Pereira-Santaella, E. González-Alfonso, M. Agúndez, D. Rigopoulou, F. R. Donnan, G. Speranza, N. Thatte
Comments: To appear in Nature Astronomy. 15 Figures, 1 Table
Subjects: astro-ph.GA, astro-ph.CO, astro-ph.SR
arXiv:2602.04965v1 [pdf]
Title: Establishing a relationship between the cosmological 21 cm power spectrum and interferometric closure phases
Authors: Pascal M. Keller, Bojan Nikolic, Nithyanandan Thyagarajan
Comments: 12 pages, 9 figures, 1 table
Subjects: astro-ph.CO, astro-ph.IM
arXiv:2602.03030v1 [pdf]
Title: From Grism to IFU: Revising the Redshift and Nature of the Massive Dusty Galaxy S1 with JWST and ALMA
Authors: Mengyuan Xiao, Longji Bing, Gabriel Brammer, Pascal A. Oesch, David Elbaz, Rui Marques-Chaves, Miroslava Dessauges-Zavadsky, Benjamin Magnelli, Rychard Bouwens, Emanuele Daddi, Maximilien Franco, Qiusheng Gu, Thomas Herard-Demanche, Garth Illingworth, Ivo Labbe, Danilo Marchesini, Jorryt Matthee, Romain A. Meyer, Rohan P. Naidu, Irene Shivaei, Pieter van Dokkum, Andrea Weibel, Christina C. Williams, Stijn Wuyts
Comments: 9 pages, 6 figures, 3 tables; submitted to A&A
Subjects: astro-ph.GA
arXiv:2602.03935v1 [pdf]
Title: pop-cosmos: Forward modeling KiDS-1000 redshift distributions using realistic galaxy populations
Authors: Boris Leistedt, Hiranya V. Peiris, Anik Halder, Stephen Thorp, Daniel J. Mortlock, Arthur Loureiro, Justin Alsing, Gurjeet Jagwani, Madalina N. Tudorache, Sinan Deger, Joel Leja, Benedict Van den Bussche, Angus H. Wright, Shun-Sheng Li, Konrad Kuijken, Hendrik Hildebrandt
Comments: 22 pages, 11 figures, to be submitted to ApJ
Subjects: astro-ph.CO
arXiv:2602.03574v1 [pdf]
Title: Euclid. Properties and performance of the NISP signal estimator
Authors: Euclid Collaboration, F. Cogato, B. Kubik, R. Barbier, S. Conseil, E. Medinaceli, Y. Copin, E. Franceschi, L. Valenziano, N. Aghanim, B. Altieri, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, A. Balestra, S. Bardelli, P. Battaglia, A. Biviano, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, G. Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, S. Casas, M. Castellano, G. Castignani, S. Cavuoti, A. Cimatti, C. Colodro-Conde, G. Congedo, C. J. Conselice, L. Conversi, L. Corcione, A. Costille, F. Courbin, H. M. Courtois, R. da Silva, H. Degaudenzi, G. De Lucia, H. Dole, F. Dubath, X. Dupac, S. Dusini, A. Ealet, S. Escoffier, M. Farina, R. Farinelli, F. Faustini, S. Ferriol, F. Finelli, N. Fourmanoit, M. Frailis, M. Fumana, S. Galeotta, K. George, W. Gillard, B. Gillis, C. Giocoli, J. Gracia-Carpio, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, F. Hormuth, A. Hornstrup, P. Hudelot, K. Jahnke, M. Jhabvala, E. Keihänen, S. Kermiche, A. Kiessling, R. Kohley, M. Kümmel, M. Kunz, H. Kurki-Suonio, A. M. C. Le Brun, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, G. Mainetti, D. Maino, E. Maiorano, O. Mansutti, S. Marcin, O. Marggraf, M. Martinelli, N. Martinet, F. Marulli, R. J. Massey, S. Mei, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, A. Mora, M. Moresco, L. Moscardini, C. Neissner, S. -M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, C. Rosset, E. Rossetti, R. Saglia, Z. Sakr, A. G. Sánchez, D. Sapone, B. Sartoris, M. Schirmer, P. Schneider, M. Scodeggio, A. Secroun, G. Seidel, S. Serrano, P. Simon, C. Sirignano, G. Sirri, L. Stanco, J. Steinwagner, P. Tallada-Crespí, D. Tavagnacco, A. N. Taylor, I. Tereno, S. Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, J. Valiviita, T. Vassallo, A. Veropalumbo, Y. Wang, J. Weller, A. Zacchei, F. M. Zerbi, E. Zucca, M. Ballardini, M. Bolzonella, E. Bozzo, C. Burigana, R. Cabanac, M. Calabrese, A. Cappi, T. Castro, J. A. Escartin Vigo, G. Fabbian, L. Gabarra, J. García-Bellido, V. Gautard, S. Hemmati, J. Macias-Perez, R. Maoli, J. Martín-Fleitas, N. Mauri, R. B. Metcalf, P. Monaco, A. Pezzotta, M. Pöntinen, I. Risso, V. Scottez, M. Sereno, M. Tenti, M. Tucci, M. Viel, M. Wiesmann, Y. Akrami, G. Alguero, I. T. Andika, G. Angora, S. Anselmi, M. Archidiacono, F. Atrio-Barandela, L. Bazzanini, D. Bertacca, M. Bethermin, F. Beutler, A. Blanchard, L. Blot, M. Bonici, S. Borgani, M. L. Brown, S. Bruton, A. Calabro, B. Camacho Quevedo, F. Caro, C. S. Carvalho, Y. Charles, A. R. Cooray, O. Cucciati, S. Davini, F. De Paolis, G. Desprez, A. Díaz-Sánchez, S. Di Domizio, J. M. Diego, V. Duret, M. Y. Elkhashab, A. Enia, Y. Fang, A. G. Ferrari, A. Finoguenov, A. Fontana, A. Franco, K. Ganga, T. Gasparetto, E. Gaztanaga, F. Giacomini, F. Gianotti, G. Gozaliasl, A. Gruppuso, M. Guidi, C. M. Gutierrez, A. Hall, H. Hildebrandt, J. Hjorth, J. J. E. Kajava, Y. Kang, V. Kansal, D. Karagiannis, K. Kiiveri, J. Kim, C. C. Kirkpatrick, S. Kruk, M. Lattanzi, L. Legrand, F. Lepori, G. Leroy, G. F. Lesci, J. Lesgourgues, T. I. Liaudat, M. Magliocchetti, A. Manjón-García, F. Mannucci, C. J. A. P. Martins, L. Maurin, M. Miluzio, A. Montoro, C. Moretti, G. Morgante, S. Nadathur, K. Naidoo, P. Natoli, A. Navarro-Alsina, S. Nesseris, L. Pagano, E. Palazzi, D. Paoletti, F. Passalacqua, K. Paterson, L. Patrizii, A. Pisani, D. Potter, G. W. Pratt, S. Quai, M. Radovich, W. Roster, S. Sacquegna, M. Sahlén, D. B. Sanders, E. Sarpa, A. Schneider, D. Sciotti, E. Sellentin, L. C. Smith, K. Tanidis, F. Tarsitano, G. Testera, R. Teyssier, S. Tosi, A. Troja, A. Venhola, D. Vergani, G. Verza, P. Vielzeuf, S. Vinciguerra, N. A. Walton, A. H. Wright
Comments: No journal ref found
Subjects: astro-ph.IM
arXiv:2602.02484v1 [pdf]
Title: The FLAMINGO Project: Exploring the X-ray--cosmic-shear cross-correlation as a probe of large-scale structure
Authors: William McDonald, Joop Schaye, Konrad Kuijken, John Helly, Joey Braspenning, Matthieu Schaller
Comments: No journal ref found
Subjects: astro-ph.CO
arXiv:2602.02323v1 [pdf]
Title: PRISMS. UNCOVER-26185, a metal-poor SFG at z=10.05 with no evidence for a X-ray-luminous AGN
Authors: J. Álvarez-Márquez, L. Colina, A. Crespo-Gomez, S. Kendrew, J. Zavala, R. Marques-Chaves, C. Prieto-Jiménez, Abdurro'uf, C. Blanco-Prieto, L. A. Boogaard, M. Castellano, A. Fontana, Y. Fudamoto, S. Fujimoto, M. García-Marín, Y. Harikane, S. Harish, T. Hashimoto, T. Hsiao, E. Iani, A. K. Inoue, D. Langeroodi, R. Lin, J. Melinder, L. Napolitano, G. Ostlin, P. G. Pérez-González, P. Rinaldi, B. Rodríguez Del Pino, P. Santini, Y. Sugahara, T. Treu, A. Varo-O'ferral, G. Wright
Comments: 14 pages, 5 figures, submitted to A&A
Subjects: astro-ph.GA
arXiv:2602.02322v1 [pdf]
Title: PRISMS. U37126, a very blue, ISM-naked starburst at z=10.255 with nearly 100% Lyman continuum escape fraction
Authors: R. Marques-Chaves, J. Álvarez-Márquez, L. Colina, S. Kendrew, Abdurro'uf, C. Blanco-Prieto, L. A. Boogaard, M. Castellano, K. I. Caputi, A. Crespo-Gomez, A. Fontana, Y. Fudamoto, S. Fujimoto, M. García-Marín, Y. Harikane, S. Harish, T. Hashimoto, T. Hsiao, E. Iani, A. K. Inoue, D. Langeroodi, R. Lin, J. Melinder, L. Napolitano, G. Ostlin, P. G. Pérez-González, C. Prieto-Jiménez, P. Rinaldi, B. Rodríguez Del Pino, P. Santini, Y. Sugahara, A. Varo-O'ferral, G. Wright, J. Zavala
Comments: 13 pages, 8 figures. Submitted to A&A. Comments welcome
Subjects: astro-ph.GA
arXiv:2602.01620v1 [pdf]
Title: exoALMA XIX: Confirmation of Non-thermal Line Broadening in the DM Tau Protoplanetary Disk
Authors: Caitlyn Hardiman, Christophe Pinte, Daniel J. Price, Thomas Hilder, Iain Hammond, Taïssa Danilovich, Sean M. Andrews, Richard Teague, Giovanni Rosotti, Mario Flock, Gianni Cataldi, Jaehan Bae, Marcelo Barraza-Alfaro, Myriam Benisty, Nicolás Cuello, Pietro Curone, Ian Czekala, Stefano Facchini, Daniele Fasano, Misato Fukagawa, Maria Galloway-Sprietsma, Himanshi Garg, Cassandra Hall, Jane Huang, John D. Ilee, Andres F. Izquierdo, Kazuhiro Kanagawa, Geoffroy Lesur, Giuseppe Lodato, Cristiano Longarini, Ryan Loomis, Francois Menard, Ryuta Orihara, Jochen Stadler, Hsi-Wei Yen, Gaylor Wafflard-Fernandez, David J. Wilner, Andrew J. Winter, Lisa Wölfer, Tomohiro C. Yoshida, Brianna Zawadzki
Comments: 18 pages, 11 figures, published in ApJ Letters
Subjects: astro-ph.EP
arXiv:2601.22251v1 [pdf]
Title: X-Ray Analysis of an Off-Axis Merger Stage Binary Galaxy Cluster: PSZ2 G279.79+39.09
Authors: Sibel Döner, Turgay Caglar, Krista L. Smith, Serap Ak, Andrea Botteon, M. Kiyami Erdim, John A. ZuHone
Comments: Accepted by the ApJ
Subjects: astro-ph.HE, astro-ph.CO
arXiv:2601.20576v1 [pdf]
Title: Revealing the link between halo mass and radio jet activities in quasars
Authors: B. -H. Yue, P. N. Best, H. J. A. Röttgering, K. J. Duncan, C. L. Hale, L. K. Morabito, D. J. B. Smith
Comments: 19 pages, 10 figures. Submitted to MNRAS. Comments welcome!
Subjects: astro-ph.GA
arXiv:2601.20146v1 [pdf]
Title: Spatial distribution of organics in the Horsehead nebula: signposts of chemistry driven by atomic carbon
Authors: Claudio Hernández-Vera, Viviana V. Guzmán, Jérôme Pety, Ka Tat Wong, Javier R. Goicoechea, Franck Le Petit, Maryvonne Gerin, Aquiles den Braber, John M. Carpenter, Vincent Maillard, Emeric Bron, Pierre Gratier, Evelyne Roueff
Comments: 21 pages, 4 tables, 10 figures; Accepted for publication in A&A
Subjects: astro-ph.GA, astro-ph.EP, astro-ph.SR
arXiv:2601.21111v1 [pdf]
Title: Euclid preparation. Decomposing components of the extragalactic background light using multi-band intensity mapping cross-correlations
Authors: Euclid Collaboration, Y. Cao, A. R. Cooray, T. Li, Y. -T. Cheng, K. Tanidis, S. H. Lim, D. Scott, B. Altieri, A. Amara, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, S. Bardelli, A. Biviano, E. Branchini, M. Brescia, S. Camera, G. Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, S. Casas, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, A. Cimatti, C. Colodro-Conde, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, F. Courbin, H. M. Courtois, J. -C. Cuillandre, H. Degaudenzi, G. De Lucia, H. Dole, M. Douspis, F. Dubath, X. Dupac, M. Farina, R. Farinelli, F. Faustini, S. Ferriol, F. Finelli, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, K. George, B. Gillis, C. Giocoli, J. Gracia-Carpio, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, M. Jhabvala, B. Joachimi, S. Kermiche, A. Kiessling, B. Kubik, M. Kunz, H. Kurki-Suonio, A. M. C. Le Brun, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, G. Mainetti, D. Maino, E. Maiorano, O. Mansutti, S. Marcin, O. Marggraf, M. Martinelli, N. Martinet, F. Marulli, R. J. Massey, E. Medinaceli, S. Mei, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, A. Mora, M. Moresco, L. Moscardini, C. Neissner, S. -M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, G. Polenta, M. Poncet, L. A. Popa, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, R. Saglia, Z. Sakr, D. Sapone, P. Schneider, T. Schrabback, A. Secroun, G. Seidel, S. Serrano, E. Sihvola, C. Sirignano, G. Sirri, L. Stanco, J. Steinwagner, P. Tallada-Crespí, I. Tereno, N. Tessore, S. Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, J. Valiviita, T. Vassallo, Y. Wang, J. Weller, G. Zamorani, F. M. Zerbi, E. Zucca, M. Ballardini, E. Bozzo, C. Burigana, R. Cabanac, M. Calabrese, A. Cappi, T. Castro, J. A. Escartin Vigo, L. Gabarra, J. Macias-Perez, R. Maoli, J. Martín-Fleitas, N. Mauri, R. B. Metcalf, P. Monaco, A. A. Nucita, A. Pezzotta, M. Pöntinen, I. Risso, V. Scottez, M. Sereno, M. Tenti, M. Tucci, M. Viel, M. Wiesmann, Y. Akrami, I. T. Andika, G. Angora, S. Anselmi, M. Archidiacono, E. Aubourg, L. Bazzanini, D. Bertacca, M. Bethermin, A. Blanchard, L. Blot, M. Bonici, S. Borgani, M. L. Brown, S. Bruton, A. Calabro, B. Camacho Quevedo, F. Caro, C. S. Carvalho, F. Cogato, S. Conseil, O. Cucciati, S. Davini, G. Desprez, A. Díaz-Sánchez, S. Di Domizio, J. M. Diego, V. Duret, M. Y. Elkhashab, A. Enia, A. Finoguenov, A. Fontana, A. Franco, K. Ganga, T. Gasparetto, E. Gaztanaga, F. Giacomini, F. Gianotti, G. Gozaliasl, A. Gruppuso, M. Guidi, C. M. Gutierrez, A. Hall, C. Hernández-Monteagudo, H. Hildebrandt, J. Hjorth, J. J. E. Kajava, Y. Kang, V. Kansal, D. Karagiannis, K. Kiiveri, J. Kim, C. C. Kirkpatrick, S. Kruk, M. Lattanzi, L. Legrand, F. Lepori, G. Leroy, G. F. Lesci, J. Lesgourgues, T. I. Liaudat, S. J. Liu, M. Magliocchetti, F. Mannucci, C. J. A. P. Martins, L. Maurin, M. Miluzio, C. Moretti, G. Morgante, K. Naidoo, P. Natoli, A. Navarro-Alsina, S. Nesseris, L. Pagano, D. Paoletti, F. Passalacqua, K. Paterson, L. Patrizii, A. Pisani, D. Potter, G. W. Pratt, S. Quai, M. Radovich, G. Rodighiero, K. Rojas, W. Roster, S. Sacquegna, M. Sahlén, D. B. Sanders, E. Sarpa, C. Scarlata, A. Schneider, D. Sciotti, E. Sellentin, L. C. Smith, J. G. Sorce, F. Tarsitano, G. Testera, R. Teyssier, S. Tosi, A. Troja, A. Venhola, D. Vergani, G. Verza, S. Vinciguerra, N. A. Walton, J. R. Weaver, A. H. Wright
Comments: 21 pages, 11 figures
Subjects: astro-ph.CO
arXiv:2601.20966v1 [pdf]
Title: The Third Option: Color Phase Curves to Characterize the Atmospheres of Temperate Rocky Exoplanets
Authors: Drake Deming, Andrew Lincowski, Laura Kreidberg, Miles Currie, Jean-Michel Desert, Guangwei Fu, Jacob Lustig-Yaeger, Victoria Meadows, Ignas Snellen
Comments: 14 pages, 6 figures, submission to The Open Journal of Astrophysics
Subjects: astro-ph.EP, astro-ph.SR
arXiv:2601.20948v1 [pdf]
Title: Euclid: Early Release Observations -- The star-formation history of massive early-type galaxies in the Perseus cluster
Authors: S. Martocchia, A. Boselli, J. -C. Cuillandre, M. Mondelin, M. Bolzonella, C. Tortora, M. Fossati, C. Maraston, P. Amram, M. Baes, S. Boissier, M. Boquien, H. Bouy, F. Durret, C. M. Gutierrez, M. Kluge, Y. Roehlly, T. Saifollahi, M. A. Taylor, D. Thomas, T. E. Woods, G. Zamorani, B. Altieri, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, S. Bardelli, P. Battaglia, R. Bender, A. Biviano, E. Branchini, M. Brescia, S. Camera, G. Cañas-Herrera, V. Capobianco, C. Carbone, J. Carretero, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, A. Cimatti, C. Colodro-Conde, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, A. Costille, F. Courbin, H. M. Courtois, H. Degaudenzi, G. De Lucia, F. Dubath, X. Dupac, S. Escoffier, M. Fabricius, M. Farina, R. Farinelli, F. Faustini, S. Ferriol, F. Finelli, M. Frailis, E. Franceschi, P. Franzetti, M. Fumana, S. Galeotta, K. George, B. Gillis, C. Giocoli, P. Gómez-Alvarez, J. Gracia-Carpio, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, I. M. Hook, F. Hormuth, A. Hornstrup, K. Jahnke, M. Jhabvala, B. Joachimi, S. Kermiche, A. Kiessling, B. Kubik, M. Kümmel, H. Kurki-Suonio, A. M. C. Le Brun, D. Le Mignant, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, G. Mainetti, D. Maino, O. Mansutti, O. Marggraf, M. Martinelli, N. Martinet, F. Marulli, R. J. Massey, E. Medinaceli, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, A. Mora, L. Moscardini, C. Neissner, S. -M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, L. Pozzetti, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, R. Saglia, Z. Sakr, A. G. Sánchez, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, S. Serrano, E. Sihvola, P. Simon, C. Sirignano, G. Sirri, J. Steinwagner, P. Tallada-Crespí, A. N. Taylor, I. Tereno, N. Tessore, S. Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, L. Valenziano, J. Valiviita, T. Vassallo, A. Veropalumbo, Y. Wang, J. Weller, I. A. Zinchenko, E. Zucca, J. García-Bellido, J. Martín-Fleitas, M. Maturi, V. Scottez
Comments: 21 pages, 8 figures, accepted for publication in A&A
Subjects: astro-ph.GA
arXiv:2601.20929v1 [pdf]
Title: Little Red Dot $-$ Host Galaxy $=$ Black Hole Star: A Gas-Enshrouded Heart at the Center of Every Little Red Dot
Authors: Wendy Q. Sun, Rohan P. Naidu, Jorryt Matthee, Anna de Graaff, John Chisholm, Jenny E. Greene, Pascal A. Oesch, Alberto Torralba, Raphael E. Hviding, Gabriel Brammer, Robert A. Simcoe, Sownak Bose, Rychard Bouwens, Pratika Dayal, Anna-Christina Eilers, Qinyue Fei, Lukas J. Furtak, Rashmi Gottumukkala, Andy Goulding, Kasper E. Heintz, Michaela Hirschmann, Vasily Kokorev, Joel Leja, Zhaoran Liu, Priyamvada Natarajan, Andrew D. Santarelli, David J. Setton, Aaron Smith, Sandro Tacchella, Marta Volonteri, Fabian Walter, Andrea Weibel, Christina C. Williams
Comments: Submitted to the Open Journal of Astrophysics. Main results in Figs. 5 (BH* stack), 12 (explanation of the LRD SED), and 15 (hidden BH*s in blue galaxies). Comments warmly welcomed!
Subjects: astro-ph.GA, astro-ph.CO, astro-ph.HE
arXiv:2601.20864v1 [pdf]
Title: Bottom-heavy initial mass functions reveal hidden mass in early galaxies
Authors: Chloe M. Cheng, Martje Slob, Mariska Kriek, Aliza G. Beverage, Pieter G. van Dokkum, Rachel Bezanson, Gabriel Brammer, Charlie Conroy, Anna de Graaff, Elham Eftekhari, Robert Feldmann, Wout M. Goesaert, Meng Gu, Joel Leja, Brian Lorenz, Pavel E. Mancera Piña, Ignacio Martín-Navarro, Andrew B. Newman, Sedona H. Price, Alice E. Shapley, Piyush Sharda, Katherine A. Suess, Arjen van der Wel, Daniel R. Weisz
Comments: 29 pages, 7 figures, under peer review at Nature Astronomy
Subjects: astro-ph.GA
arXiv:2601.20826v1 [pdf]
Title: Euclid preparation. Galaxy power spectrum modelling in redshift space
Authors: Euclid Collaboration, B. Camacho Quevedo, M. Crocce, M. Pellejero Ibañez, R. E. Angulo, A. Pezzotta, A. Eggemeier, G. Gambardella, C. Moretti, E. Sefusatti, A. Moradinezhad Dizgah, M. Zennaro, M. -A. Breton, A. Chudaykin, G. D'Amico, V. Desjacques, S. de la Torre, M. Guidi, M. Kärcher, K. Pardede, C. Porciani, A. Pugno, J. Salvalaggio, E. Sarpa, A. Veropalumbo, B. Altieri, S. Andreon, N. Auricchio, C. Baccigalupi, M. Baldi, S. Bardelli, R. Bender, A. Biviano, E. Branchini, M. Brescia, S. Camera, V. Capobianco, C. Carbone, V. F. Cardone, J. Carretero, S. Casas, F. J. Castander, M. Castellano, G. Castignani, S. Cavuoti, K. C. Chambers, A. Cimatti, C. Colodro-Conde, G. Congedo, L. Conversi, Y. Copin, F. Courbin, H. M. Courtois, H. Degaudenzi, G. De Lucia, H. Dole, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Escoffier, M. Farina, R. Farinelli, S. Farrens, S. Ferriol, F. Finelli, S. Fotopoulou, N. Fourmanoit, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, K. George, B. Gillis, C. Giocoli, J. Gracia-Carpio, A. Grazian, F. Grupp, L. Guzzo, S. V. H. Haugan, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, B. Joachimi, S. Kermiche, A. Kiessling, B. Kubik, M. Kümmel, M. Kunz, H. Kurki-Suonio, A. M. C. Le Brun, S. Ligori, P. B. Lilje, V. Lindholm, I. Lloro, G. Mainetti, E. Maiorano, O. Mansutti, S. Marcin, O. Marggraf, M. Martinelli, N. Martinet, F. Marulli, R. J. Massey, E. Medinaceli, M. Melchior, M. Meneghetti, E. Merlin, G. Meylan, A. Mora, M. Moresco, L. Moscardini, C. Neissner, S. -M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, F. Raison, J. Rhodes, G. Riccio, F. Rizzo, E. Romelli, M. Roncarelli, R. Saglia, Z. Sakr, A. G. Sánchez, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, E. Sihvola, P. Simon, C. Sirignano, G. Sirri, A. Spurio Mancini, L. Stanco, P. Tallada-Crespí, D. Tavagnacco, A. N. Taylor, I. Tereno, N. Tessore, S. Toft, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, J. Valiviita, T. Vassallo, Y. Wang, J. Weller, G. Zamorani, F. M. Zerbi, E. Zucca, V. Allevato, M. Ballardini, A. Boucaud, E. Bozzo, C. Burigana, R. Cabanac, M. Calabrese, A. Cappi, T. Castro, J. A. Escartin Vigo, L. Gabarra, J. Macias-Perez, R. Maoli, J. Martín-Fleitas, N. Mauri, R. B. Metcalf, P. Monaco, A. A. Nucita, M. Pöntinen, I. Risso, V. Scottez, M. Sereno, M. Tenti, M. Tucci, M. Viel, M. Wiesmann, Y. Akrami, I. T. Andika, G. Angora, M. Archidiacono, F. Atrio-Barandela, L. Bazzanini, J. Bel, D. Bertacca, M. Bethermin, A. Blanchard, L. Blot, H. Böhringer, S. Borgani, M. L. Brown, S. Bruton, A. Calabro, F. Caro, C. S. Carvalho, F. Cogato, A. R. Cooray, S. Davini, F. De Paolis, G. Desprez, A. Díaz-Sánchez, S. Di Domizio, J. M. Diego, V. Duret, M. Y. Elkhashab, A. Enia, Y. Fang, A. G. Ferrari, A. Finoguenov, A. Fontana, F. Fontanot, A. Franco, K. Ganga, T. Gasparetto, E. Gaztanaga, F. Giacomini, F. Gianotti, G. Gozaliasl, A. Gruppuso, C. M. Gutierrez, A. Hall, C. Hernández-Monteagudo, H. Hildebrandt, J. Hjorth, J. J. E. Kajava, Y. Kang, V. Kansal, D. Karagiannis, K. Kiiveri, J. Kim, C. C. Kirkpatrick, S. Kruk, L. Legrand, M. Lembo, F. Lepori, G. Leroy, G. F. Lesci, J. Lesgourgues, T. I. Liaudat, M. Magliocchetti, F. Mannucci, C. J. A. P. Martins, L. Maurin, M. Miluzio, A. Montoro, G. Morgante, S. Nadathur, K. Naidoo, A. Navarro-Alsina, S. Nesseris, L. Pagano, D. Paoletti, F. Passalacqua, K. Paterson, L. Patrizii, A. Pisani, D. Potter, G. W. Pratt, S. Quai, M. Radovich, K. Rojas, W. Roster, S. Sacquegna, M. Sahlén, D. B. Sanders, A. Schneider, D. Sciotti, E. Sellentin, L. C. Smith, K. Tanidis, C. Tao, F. Tarsitano, G. Testera, R. Teyssier, S. Tosi, A. Troja, D. Vergani, F. Vernizzi, G. Verza, P. Vielzeuf, S. Vinciguerra, N. A. Walton, A. H. Wright
Comments: 14 pages,9 figures
Subjects: astro-ph.CO
arXiv:2601.20902v1 [pdf]
Title: The power of polarimetry for characterising exoplanet atmospheres, clouds, and surfaces with NASA's Habitable Worlds Observatory
Authors: Katy L. Chubb, Mei Ting Mak, Joanna K. Barstow, Beth Biller, Sarah Rugheimer, Daphne M. Stam, Victor Trees
Comments: White paper submitted to the UK Space Agency's initiative "UK Space Frontiers 2035"
Subjects: astro-ph.IM, astro-ph.EP
arXiv:2601.19390v1 [pdf]
Title: Almanac: HMC sampling with bounded velocity
Authors: Javier Silva Lafaurie, Lorne Whiteway, Elena Sellentin, Kutay Nazli, Andrew H. Jaffe, Alan F. Heavens, Arthur Loureiro
Comments: No journal ref found
Subjects: astro-ph.CO, stat.AP
arXiv:2601.19866v1 [pdf]
Title: Discovery of Galactic center ejected star in DESI DR1
Authors: Manuel Cavieres, Sergey E. Koposov, Elena Maria Rossi, Zephyr Penoyre, Sill Verberne
Comments: 12 pages, 5 figures, submitted to A&A, comments are welcome!
Subjects: astro-ph.GA
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