Overview

Winds and fountains in GECKOS star-forming galaxies

Describe the details of your eGalactic winds play a crucial role in galaxy evolution by expelling gas from the disk, thereby limiting the fuel available for star formation. Simulations suggest these winds are the most important regulators of galaxy growth, yet their mass outflow rates and phase distribution remain poorly constrained due to a lack of multi-phase observations spanning warm ionised, cold molecular, and atomic gas phases.
I will present results from the GECKOS survey, which combines deep VLT/MUSE observations with ALMA, ASKAP-WALLABY and MeerKAT observations, and upcoming JWST data to study galactic winds in edge-on galaxies. We resolve filamentary outflows from star-forming knots in the disk at ~100 pc scales. By quantifying the cold gas mass in these filaments across ionised, molecular, and atomic phases, we estimate the energy required for feedback to lift this material. We relate star formation in the disk to the energy associated with feedback. Our results can directly inform sub-grid physics for galaxy evolution simulations and serve as a benchmark for large surveys of single-phase wind measurements. They also emphasise the critical role of multi-wavelength approaches in the upcoming SKA era.vent here …

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