The baryon cycle of Seven Dwarfs with superbubble feedback
Mattia Mina, Sijing Shen, Benjamin Walter Keller, Lucio Mayer, Piero, Madau, and James Wadsley

TL;DR
This paper uses high-resolution cosmological simulations with a superbubble feedback model to study dwarf galaxy evolution, revealing more effective dark matter cusp destruction and detailed CGM properties consistent with observations.
Contribution
It introduces a superbubble feedback model in cosmological simulations, showing improved destruction of dark matter cusps and realistic CGM characteristics in dwarf galaxies.
Findings
Superbubble feedback more effectively destroys DM cusps than blastwave models.
Simulated dwarf galaxies match observed scaling relations and CGM properties.
C IV and O VI column densities are significantly higher with superbubble feedback.
Abstract
We present results from a high-resolution, cosmological, CDM simulation of a group of field dwarf galaxies with the "superbubble" model for clustered SN feedback, accounting for thermal conduction and cold gas evaporation. The initial conditions and the galaxy formation physics, other than SN feedback, are the same as in Shen et al. (2014). The simulated luminous galaxies have blue colors, low star formation efficiencies and metallicities, and high cold gas content, reproducing the observed scaling relations of dwarfs in the Local Volume. Bursty star formation histories and superbubble-driven outflows lead to the formation of kpc-size DM cores when stellar masses reaches , similar to previous findings. However, the superbubble model appears more effective in destroying DM cusps than the previously adopted "blastwave" model, reflecting a higher coupling…
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