Galaxy formation and evolution

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Evaluating the variance of individual halo properties in constrained cosmological simulations

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 534:4 (2024) 3120-3132

Authors:

Richard Stiskalek, Harry Desmond, Julien Devriendt, Adrianne Slyz
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Scant evidence for thawing quintessence

Physical Review D American Physical Society (APS) 110:8 (2024) 083528

Authors:

William J Wolf, Carlos García-García, Deaglan J Bartlett, Pedro G Ferreira
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Using JADES NIRCam photometry to investigate the dependence of stellar mass inferences on the IMF in the early universe

Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences 121:42 (2024) e2317375121

Authors:

Charity Woodrum, Marcia Rieke, Zhiyuan Ji, William M Baker, Rachana Bhatawdekar, Andrew J Bunker, Stéphane Charlot, Emma Curtis-Lake, Daniel J Eisenstein, Kevin Hainline, Ryan Hausen, Jakob M Helton, Raphael E Hviding, Benjamin D Johnson, Brant Robertson, Fengwu Sun, Sandro Tacchella, Lily Whitler, Christina C Williams, Christopher NA Willmer
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GA-NIFS & EIGER: A merging quasar host at z=7 with an overmassive black hole

(2024)

Authors:

Madeline A Marshall, Minghao Yue, Anna-Christina Eilers, Jan Scholtz, Michele Perna, Chris J Willott, Roberto Maiolino, Hannah Übler, Santiago Arribas, Andrew J Bunker, Stephane Charlot, Bruno Rodríguez Del Pino, Torsten Böker, Stefano Carniani, Giovanni Cresci, Francesco D'Eugenio, Gareth C Jones, Giacomo Venturi, Rongmon Bordoloi, Daichi Kashino, Ruari Mackenzie, Jorryt Matthee, Rohan Naidu, Robert A Simcoe
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A core in a star-forming disc as evidence of inside-out growth in the early Universe

Nature Astronomy Nature Research 9:1 (2024) 141-154

Authors:

William M Baker, Sandro Tacchella, Benjamin D Johnson, Erica Nelson, Katherine A Suess, Francesco D’Eugenio, Mirko Curti, Anna de Graaff, Zhiyuan Ji, Roberto Maiolino, Brant Robertson, Jan Scholtz, Stacey Alberts, Santiago Arribas, Kristan Boyett, Andrew J Bunker, Stefano Carniani, Stephane Charlot, Zuyi Chen, Jacopo Chevallard, Emma Curtis-Lake, A Lola Danhaive, Christa DeCoursey, Eiichi Egami

Abstract:

The physical processes that establish the morphological evolution and the structural diversity of galaxies are key unknowns in extragalactic astrophysics. Here we report the finding of the morphologically mature galaxy JADES-GS+53.18343−27.79097, which existed within the first 700 million years of the Universe’s history. This star-forming galaxy with a stellar mass of 400 million solar masses consists of three components: a highly compact core with a half-light radius of less than 100 pc, an actively star-forming disc with a radius of about 400 pc and a star-forming clump, all of which show distinctive star-formation histories. The central stellar mass density of this galaxy is within a factor of 2 of the most massive present-day ellipticals, while being globally 1,000 times less massive. The radial profile of the specific star-formation rate is rising towards the outskirts. This evidence suggests a detection of the inside-out growth of a galaxy as a proto-bulge and a star-forming disc in the epoch of reionization.
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