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Photometric detection at 7.7 μm of a galaxy beyond redshift 14 with JWST/MIRI

Nature Astronomy Nature Research 9:5 (2025) 729-740

Authors:

Jakob M Helton, George H Rieke, Stacey Alberts, Zihao Wu, Daniel J Eisenstein, Kevin N Hainline, Stefano Carniani, Zhiyuan Ji, William M Baker, Rachana Bhatawdekar, Andrew J Bunker, Phillip A Cargile, Stéphane Charlot, Jacopo Chevallard, Francesco D’Eugenio, Eiichi Egami, Benjamin D Johnson, Gareth C Jones, Jianwei Lyu, Roberto Maiolino, Pablo G Pérez-González, Marcia J Rieke, Brant Robertson, Aayush Saxena

Abstract:

The James Webb Space Telescope (JWST) has spectroscopically confirmed numerous galaxies at z > 10. While weak rest-frame ultraviolet emission lines have only been seen in a handful of sources, the stronger rest-frame optical emission lines are highly diagnostic and accessible at mid-infrared wavelengths with the Mid-Infrared Instrument (MIRI) of JWST. We report the photometric detection of the distant spectroscopically confirmed galaxy JADES-GS-z14-0 at z=14.32−0.20+0.08 with MIRI at 7.7 μm. The most plausible solution for the stellar-population properties is that this galaxy contains half a billion solar masses in stars with a strong burst of star formation in the most recent few million years. For this model, at least one-third of the flux at 7.7 μm originates from the rest-frame optical emission lines Hβ and/or [O iii]λλ4959, 5007. The inferred properties of JADES-GS-z14-0 suggest rapid mass assembly and metal enrichment during the earliest phases of galaxy formation. This work demonstrates the unique power of mid-infrared observations in understanding galaxies at the redshift frontier.
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The kinematic contribution to the cosmic number count dipole

ArXiv 2503.0247 (2025)

Authors:

JD Wagenveld, S von Hausegger, H-R Klöckner, DJ Schwarz
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The LOFAR Two-metre Sky Survey: Deep Fields Data Release 2

Astronomy & Astrophysics EDP Sciences 695 (2025) a80

Authors:

TW Shimwell, CL Hale, PN Best, A Botteon, A Drabent, MJ Hardcastle, V Jelić, JMGHJ de Jong, R Kondapally, HJA Röttgering, C Tasse, RJ van Weeren, WL Williams, A Bonafede, M Bondi, M Brüggen, G Brunetti, JR Callingham, F De Gasperin, KJ Duncan, C Horellou, S Iyer, I de Ruiter, K Małek, DG Nair, LK Morabito, I Prandoni, A Rowlinson, J Sabater, A Shulevski, DJB Smith, F Sweijen
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The jet paths of radio active galactic nuclei and their cluster weather

Astronomy & Astrophysics EDP Sciences 695 (2025) a178

Authors:

E Vardoulaki, V Backöfer, A Finoguenov, F Vazza, J Comparat, G Gozaliasl, IH Whittam, CL Hale, JR Weaver, AM Koekemoer, JD Collier, B Frank, I Heywood, S Sekhar, AR Taylor, S Pinjarkar, MJ Hardcastle, T Shimwell, M Hoeft, SV White, F An, F Tabatabaei, Z Randriamanakoto, MD Filipovic
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Reduction of the type Ia supernova host galaxy step in the outer regions of galaxies

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 538:1 (2025) 181-197

Authors:

M Toy, P Wiseman, M Sullivan, D Scolnic, M Vincenzi, D Brout, TM Davis, C Frohmaier, L Galbany, C Lidman, J Lee, L Kelsey, R Kessler, A Möller, B Popovic, BO Sánchez, P Shah, M Smith, M Aguena, S Allam, O Alves, D Bacon, D Brooks, DL Burke, A Carnero Rosell, J Carretero, LN da Costa, MES Pereira, S Desai, HT Diehl, P Doel, A Drlica-Wagner, S Everett, I Ferrero, B Flaugher, J Frieman, J García-Bellido, M Gatti, E Gaztanaga, G Giannini, RA Gruendl, G Gutierrez, SR Hinton, DL Hollowood, K Honscheid, DJ James, K Kuehn, O Lahav, S Lee, JL Marshall, J Mena-Fernández, R Miquel, A Palmese, A Pieres, AA Plazas Malagón, AK Romer, S Samuroff, E Sanchez, D Sanchez Cid, M Schubnell, E Suchyta, MEC Swanson, G Tarle, DL Tucker, V Vikram, AR Walker, N Weaverdyck
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