Galactic winds are created by the explosion of massive stars. As they are diffuse and of low density, they are usually hard to spot. To see them, the scientists combined images of more than a hundred galaxies obtained through very long exposure times. By studying magnesium atom emission signals, the team was also able to map the morphology of these winds, which appear as cones of matter perpendicularly ejected from both sides of the galactic plane.
In the future, the researchers hope to measure how far these winds extend and the quantity of matter they transport.
1 The team’s leader is affiliated with the Centre de Recherche Astrophysique de Lyon (CNRS / ENS de Lyon / Claude Bernard Lyon 1 University). Scientists from the Galaxies, Étoiles, Physique, Instrumentation (GEPI) (CNRS / Paris Observatory-PSL) research laboratory and multiple international research teams also participated.
2 The Multi-Unit Spectroscopic Explorer (MUSE) is operated by seven leading European research laboratories, including the Centre de Recherche Astrophysique de Lyon, which oversees MUSE activities.
Observational Evidence of the Prevalence of Bipolar Galactic Outflows out to 10 kpc at z? 1 for Massive Galaxies. Y.Guo, et al. Nature, 6 Decembre 2023.
DOI : https://doi.org/10.21203/rs.3.rs-2617315/v1