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Li, Z, Grand, RJJ, Wisnioski, E, Mendel, JT, Krumholz, MR, Ting, YS, Pakmor, R, Gómez, FA, Marinacci, F and Ciucǎ, I (2024) Cosmological evolution of metallicity correlation functions from the Auriga simulations. Monthly Notices of the Royal Astronomical Society, 528 (4). pp. 7103-7114. ISSN 0035-8711
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Abstract
We study the cosmological evolution of the two-point correlation functions of galactic gas-phase metal distributions using the 28 simulated galaxies from the Auriga Project. Using mock observations of the z = 0 snapshots to mimic our past work, we show that the correlation functions of the simulated mock observations are well matched to the correlation functions measured from local galaxy surv e ys. This comparison suggests that the simulations capture the processes important for determining metal correlation lengths, the key parameter in metallicity correlation functions. We investigate the evolution of metallicity correlations o v er cosmic time using the true simulation data, showing that individual galaxies undergo no significant systematic evolution in their metal correlation functions from z ∼3 to today. In addition, the fluctuations in metal correlation length are correlated with but lag ahead fluctuations in star formation rate. This suggests that re-arrangement of metals within galaxies occurs at a higher cadence than star formation activity, and is more sensitive to the changes of environment, such as g alaxy mergers, g as inflo ws/outflo ws, and fly-bys.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences; Astronomy & Astrophysics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | Oxford University Press (OUP) |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 02 Oct 2024 13:14 |
| Last Modified: | 02 Oct 2024 13:14 |
| DOI or ID number: | 10.1093/mnras/stae480 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/24321 |
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