Gravitational and mass distribution effects on stationary superwinds II. Extended dark matter haloes

TL;DR

This paper extends the analytic model of galaxy superwinds by incorporating extended dark matter and baryonic haloes, revealing their influence on wind dynamics and galaxy enrichment processes.

Contribution

It provides a generalized analytic superwind solution considering extended haloes, highlighting their impact on wind activation and galaxy chemical enrichment.

Findings

Extended haloes can trigger earlier open-box enrichment scenarios.

Mass distributions emulate recent $ ext{Lambda}$CDM halo simulations.

Halo gravitational potentials influence superwind inhibition.

Abstract

In this second part, we generalize the results of the previous paper. We present an analytic superwind solution considering extended gravitationally-interacting dark-matter and baryonic haloes. The incorporation of the latter is critical, since they can have a substantial effect on the hydrodynamics of superwinds generated by massive galaxies. Although the presence of extended and massive haloes does not change the limit for the closed-box enrichment of galaxies established in the first paper, they can trigger an earlier activation of the open-box enrichment scenario, since their gravitational potentials can contribute to the inhibition of the free superwind. Moreover, the incorporation of the extended haloes will also enhance the physical setting behind the superwind model, as we consider mass distributions with properties that emulate the results of recent simulations of $\Lambda$CDM haloes.