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Galaxy formation with radiative and chemical feedback

Graziani, L; Salvadori, S; Schneider, R; Kawata, D; Bennassuti, MD; Maselli, A; (2015) Galaxy formation with radiative and chemical feedback. Monthly Notices of the Royal Astronomical Society , 449 (3) pp. 3137-3148. 10.1093/mnras/stv494. Green open access

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Here we introduce GAMESH, a novel pipeline which implements self-consistent radiative and chemical feedback in a computational model of galaxy formation. By combining the cosmological chemical-evolution model GAMETE with the radiative transfer code CRASH, GAMESH can post process realistic outputs of a N-body simulation describing the redshift evolution of the forming galaxy. After introducing the GAMESH implementation and its features, we apply the code to a low-resolution N-body simulation of the Milky Way formation and we investigate the combined effects of self-consistent radiative and chemical feedback. Many physical properties, which can be directly compared with observations in the Galaxy and its surrounding satellites, are predicted by the code along the merger-tree assembly. The resulting redshift evolution of the Local Group star formation rates, reionisation and metal enrichment along with the predicted Metallicity Distribution Function of halo stars are critically compared with observations. We discuss the merits and limitations of the first release of GAMESH, also opening new directions to a full implementation of feedback processes in galaxy formation models by combining semi-analytic and numerical methods.

Type: Article
Title: Galaxy formation with radiative and chemical feedback
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/mnras/stv494
Publisher version: http://dx.doi.org/10.1093/mnras/stv494
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: astro-ph.GA, astro-ph.GA, astro-ph.CO
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/1527590
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