Characterizing mass, momentum, energy and metal outflow rates of multi-phase galactic winds in the FIRE-2 cosmological simulations

We characterize mass, momentum, energy and metal outflow rates of multi-phase galactic winds in a suite of FIRE-2 cosmological "zoom-in" simulations from the Feedback in Realistic Environments (FIRE) project. We analyze simulations of low-mass dwarfs, intermediate-mass dwarfs, Milky Way-ma...

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Bibliographic Details
Published in:arXiv.org 2021-09
Main Authors: Pandya, Viraj, Fielding, Drummond B, Anglés-Alcázar, Daniel, Somerville, Rachel S, Bryan, Greg L, Hayward, Christopher C, Stern, Jonathan, Chang-Goo, Kim, Quataert, Eliot, bes, John C, Claude-André Faucher-Giguère, Feldmann, Robert, Hafen, Zachary, Hopkins, Philip F, Kereš, Dušan, Murray, Norman, Wetzel, Andrew
Format: Article
Language:English
Subjects:
Feedback
Galactic halos
Galactic winds
Galaxies
Interstellar gas
Interstellar matter
Momentum
Multiphase
Outflow
Red shift
Simulation
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Summary:We characterize mass, momentum, energy and metal outflow rates of multi-phase galactic winds in a suite of FIRE-2 cosmological "zoom-in" simulations from the Feedback in Realistic Environments (FIRE) project. We analyze simulations of low-mass dwarfs, intermediate-mass dwarfs, Milky Way-mass halos, and high-redshift massive halos. Consistent with previous work, we find that dwarfs eject about 100 times more gas from their interstellar medium (ISM) than they form in stars, while this mass "loading factor" drops below one in massive galaxies. Most of the mass is carried by the hot phase (\(>10^5\) K) in massive halos and the warm phase (\(10^3-10^5\) K) in dwarfs; cold outflows (\(
ISSN:2331-8422
DOI:10.48550/arxiv.2103.06891