# A Review of Recent Observations of Galactic Winds Driven by Star Formation

## TL;DR

This review summarizes recent observational advances in understanding galactic winds driven by star formation, highlighting their complex structures, multiphase nature, and persistent scaling relationships across cosmic time.

## Contribution

It compiles and analyzes recent observational techniques and findings, emphasizing the multiphase structure and widespread occurrence of galactic winds since 2010.

## Key findings

- Galactic winds are common in star-forming galaxies across cosmic history.
- Multiphase structures of winds are revealed by advanced imaging spectroscopy.
- Scaling relationships between winds and galaxy properties are consistent over time.

## Abstract

Galaxy-scale outflows of gas, or galactic winds (GWs), driven by energy from star formation are a pivotal mechanism for regulation of star formation in the current model of galaxy evolution. Observations of this phenomenon have proliferated through the wide application of old techniques on large samples of galaxies, the development of new methods, and advances in telescopes and instrumentation. I review the diverse portfolio of direct observations of stellar GWs since 2010. Maturing measurements of the ionized and neutral gas properties of nearby winds have been joined by exciting new probes of molecular gas and dust. Low-$z$ techniques have been newly applied in large numbers at high $z$. The explosion of optical and near-infrared 3D imaging spectroscopy has revealed the complex, multiphase structure of nearby GWs. These observations point to stellar GWs being a common feature of rapidly star-forming galaxies throughout at least the second half of cosmic history, and suggest that scaling relationships between outflow and galaxy properties persist over this period. The simple model of a modest-velocity, biconical flow of multiphase gas and dust perpendicular to galaxy disks continues to be a robust descriptor of these flows.