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The Cosmos in Its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N

The Astrophysical Journal American Astronomical Society 964:1 (2024) 71

Authors:

Kevin N Hainline, Benjamin D Johnson, Brant Robertson, Sandro Tacchella, Jakob M Helton, Fengwu Sun, Daniel J Eisenstein, Charlotte Simmonds, Michael W Topping, Lily Whitler, Christopher NA Willmer, Marcia Rieke, Katherine A Suess, Raphael E Hviding, Alex J Cameron, Stacey Alberts, William M Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Eiichi Egami, Ryan Endsley, Ryan Hausen, Zhiyuan Ji, Tobias J Looser, Jianwei Lyu, Roberto Maiolino, Erica Nelson, Dávid Puskás, Tim Rawle, Lester Sandles, Aayush Saxena, Renske Smit, Daniel P Stark, Christina C Williams, Chris Willott, Joris Witstok
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Euclid: Improving the efficiency of weak lensing shear bias calibration

Astronomy & Astrophysics EDP Sciences 683 (2024) a240

Authors:

H Jansen, M Tewes, T Schrabback, N Aghanim, A Amara, S Andreon, N Auricchio, M Baldi, E Branchini, M Brescia, J Brinchmann, S Camera, V Capobianco, C Carbone, VF Cardone, J Carretero, S Casas, M Castellano, S Cavuoti, A Cimatti, G Congedo, L Conversi, Y Copin, L Corcione, F Courbin, HM Courtois, A Da Silva, H Degaudenzi, J Dinis, F Dubath, X Dupac, M Farina, S Farrens, S Ferriol, M Frailis, E Franceschi, M Fumana, S Galeotta, B Gillis, C Giocoli, A Grazian, F Grupp, SVH Haugan, H Hoekstra, W Holmes, F Hormuth, A Hornstrup, P Hudelot, K Jahnke, B Joachimi, S Kermiche, A Kiessling, M Kilbinger, T Kitching, B Kubik, H Kurki-Suonio, S Ligori, PB Lilje, V Lindholm, I Lloro, E Maiorano, O Mansutti, O Marggraf, K Markovic, N Martinet, F Marulli, R Massey, E Medinaceli, S Mei, M Melchior, Y Mellier, M Meneghetti, E Merlin, G Meylan, L Miller, M Moresco, L Moscardini, E Munari, R Nakajima, S-M Niemi, C Padilla, S Paltani, F Pasian, K Pedersen, V Pettorino, S Pires, G Polenta, M Poncet, F Raison, A Renzi, J Rhodes, G Riccio, E Romelli, M Roncarelli, E Rossetti, R Saglia, D Sapone, B Sartoris, P Schneider, A Secroun, G Seidel, S Serrano, C Sirignano, G Sirri, J Skottfelt, L Stanco, P Tallada-Crespí, I Tereno, R Toledo-Moreo, F Torradeflot, I Tutusaus, EA Valentijn, L Valenziano, T Vassallo, A Veropalumbo, Y Wang, J Weller, G Zamorani, J Zoubian, C Colodro-Conde, V Scottez
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syren-halofit: A fast, interpretable, high-precision formula for the $\Lambda$CDM nonlinear matter power spectrum

(2024)

Authors:

Deaglan J Bartlett, Benjamin D Wandelt, Matteo Zennaro, Pedro G Ferreira, Harry Desmond
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The IA Guide: A Breakdown of Intrinsic Alignment Formalisms

The Open Journal of Astrophysics Maynooth University 7 (2024)

Authors:

Claire Lamman, Eleni Tsaprazi, Jingjing Shi, Nikolina Niko Šarčević, Susan Pyne, Elisa Legnani, Tassia Ferreira
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GA-NIFS: JWST/NIRSpec integral field unit observations of HFLS3 reveal a dense galaxy group at z ∼6.3

Astronomy & Astrophysics EDP Sciences 682 (2024) A122

Authors:

Gareth C Jones, Hannah Übler, Michele Perna, Santiago Arribas, Andrew J Bunker, Stefano Carniani, Stephane Charlot, Roberto Maiolino, Bruno Rodríguez Del Pino, Chris Willott, Rebecca AA Bowler, Torsten Böker, Alex J Cameron, Jacopo Chevallard, Giovanni Cresci, Mirko Curti, Francesco D’Eugenio, Nimisha Kumari, Aayush Saxena, Jan Scholtz, Giacomo Venturi, Joris Witstok

Abstract:

Massive, starbursting galaxies in the early Universe represent some of the most extreme objects in the study of galaxy evolution. One such source is HFLS3 (z ∼ 6.34), which was originally identified as an extreme starburst galaxy with mild gravitational magnification (μ ∼ 2.2). Here, we present new observations of HFLS3 with the JWST/NIRSpec integral field unit in both low (PRISM/CLEAR; R ∼ 100) and high spectral resolution (G395H/290LP; R ∼ 2700), with high spatial resolution (∼0.1″) and sensitivity. Using a combination of the NIRSpec data and a new lensing model with accurate spectroscopic redshifts, we find that the 3″ × 3″ field is crowded, with a lensed arc (C, z = 6.3425 ± 0.0002), two galaxies to the south (S1 and S2, z = 6.3592 ± 0.0001), two galaxies to the west (W1, z = 6.3550 ± 0.0001; W2, z = 6.3628 ± 0.0001), and two low-redshift interlopers (G1, z = 3.4806 ± 0.0001; G2, z = 2.00 ± 0.01). We present spectral fits and morpho-kinematic maps for each bright emission line (e.g. [OIII]λ5007, Hα, and [NII]λ6584) from the R2700 data for all sources except G2 (whose spectral lines fall outside the observed wavelengths of the R2700 data). From a line ratio analysis, we find that the galaxies in component C are likely powered by star formation, though we cannot rule out or confirm the presence of active galactic nuclei in the other high-redshift sources. We performed gravitational lens modelling, finding evidence for a two-source composition of the lensed central object and a magnification factor (μ = 2.1 − 2.4) comparable to findings of previous work. The projected distances and velocity offsets of each galaxy suggest that they will merge within the next ∼1 Gyr. Finally, we examined the dust extinction-corrected SFRHα of each z > 6 source, finding that the total star formation (510 ± 140 M⊙ yr−1, magnification-corrected) is distributed across the six z ∼ 6.34 − 6.36 objects over a region of diameter ∼11 kpc. Altogether, this suggests that HFLS3 is not a single starburst galaxy, but instead a merging system of star-forming galaxies in the epoch of reionisation.
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