Speaker
Dominik Bomans
(Astronomical Institute of the Ruhr-University Bochum)
Description
Galactic outflows and winds are key ingredients for the birth and live of galaxies in the intergalactic medium. Via outflows the halos of galaxies are structured, heated, and enriched with heavy elements. Galactic outflows may also major drivers of the turbulence of halo gas. Using integral field spectroscopy data from the ongoing CALIFA survey (observing a statistically well defined sample of ~600 galaxies with the PPAK at the Calar Alto 3.5m telescope), we analyze the properties and frequency of outflows/winds based on a large, complete sample of intermediate and high mass galaxies in the local universe. The integral field spectroscopy data allow us to spatially map the ionization conditions of the outflow gas and investigate links to the kinematic of the gas. Additional observational information for the low mass end (using Fabry-Perot 2d-spectroscopy) and the the high mass end of galaxies (using single-fiber and long-slit spectroscopy) are presented to further explore the parameter space for the occurrence and properties of outflows and winds, and therefore the resulting sphere of influence of these galactic feedback processes.
Author
Dominik Bomans
(Astronomical Institute of the Ruhr-University Bochum)