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Formation of the First Massive Galaxies in Cosmological Simulations and Their Observational Properties

Published online by Cambridge University Press:  13 February 2024

Hidenobu Yajima Open the ORCID record for Hidenobu Yajima [Opens in a new window]
Hidenobu Yajima*
Affiliation:
Center for Computational Sciences, University of Tsukuba, Ten-nodai, 1-1-1 Tsukuba, Ibaraki 305-8577, Japan
*
email: yajima@ccs.tsukuba.ac.jp
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Abstract

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We study the formation of the first massive galaxies and their observational properties for comparisons with JWST or ALMA data by performing cosmological radiative-hydrodynamics simulations. We find that galaxies in overdense regions have high star formation rates larger than ∼10 M⊙ yr-1 at z=10 and their stellar masses reach 109 M⊙. The star formation rates of our model galaxies at z≲12 nicely match recent JWST data. In addition, we show that the morphology of galaxies drastically changes with time via major mergers and stellar feedback.

Keywords

stars: Population IIIgalaxies: evolutiongalaxies: formationgalaxies: high-redshift
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S377: Early Disk-Galaxy Formation from JWST to the Milky Way , December 2022 , pp. 39 - 42
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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