Wuppertal 2015 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 9: Astrophysik

EP 9.1: Hauptvortrag

Donnerstag, 12. März 2015, 14:30–15:00, G.10.02 (HS 9)

Galactic Winds — •Dominik Bomans — Astronomical Institute of the Ruhr-University Bochum — RUB Research Department Plasmas with Complex Interactions

The combined action of ionizing radiation and winds of massive stars together with the supernova explosions at the end of the live of massive stars can pump prodigious amounts of energy in the interstellar medium of their host galaxy. As a result large over-pressured bubbles form and material is ejected out of the galaxy. These galactic winds are key ingredients for the physics of birth and evolution of galaxies in the intergalactic medium. Via galactic winds the halos of galaxies are structured, heated, and enriched with heavy elements. In some galaxies, also winds driven by the radiation and mass outflows from super-massive black holes contribute.

In this talk I will explore the properties and frequency of galactic winds in the local universe and use these results to extrapolate on the physics at high redshift during the formation epoch of galaxies. Key data for the analysis are based on integral field spectroscopy (especially from the CALIFA survey, the new MUSE instrument at the ESO VLT, and Fabry-Perot interferometers), with additional information provided by data from the Hubble Space Telescope, as well the CHANDRA and XMM-Newton X-ray satellites, and radio synthesis telescopes.