Dr. Ralf-Juergen Dettmar
(Bochum)

University of Florida Astronomy Colloquium - Sept. 24, 2008

Gaseous Halos of Spiral Galaxies and the Interstellar Disk-Halo Connection

Multi-wavelength studies of edge-on disk galaxies show the presence of the various phases of the interstellar medium (ISM) in galactic halos. This includes the ionized gas, the hot medium, as well as the cosmic ray component coupled to the large scale magnetic field. The properties of these ISM components in halos are discussed in the framework of the disk-halo interaction, the large scale circulation of matter in a supernova driven ISM.