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In this second paper on the investigation of extraplanar diffuse ionized gasin nearby edge-on spiral galaxies we present the actual results of theindividual galaxies of our H-alpha imaging survey. A grand total of 74 galaxieshave been studied, including the 9 galaxies of a recently studied sub-sample(Rossa & Dettmar 2000). 40.5% of all studied galaxies reveal extraplanardiffuse ionized gas, whereas in 59.5% of the survey galaxies no extraplanardiffuse ionized gas could be detected. The average distances of this extendedemission above the galactic midplane range from 1-2 kpc, while individualfilaments in a few galaxies reach distances of up to |z| ~ 6 kpc. In severalcases a pervasive layer of ionized gas was detected, similar to the Reynoldslayer in our Milky Way, while other galaxies reveal only extended emissionlocally. The morphology of the diffuse ionized gas is discussed for each galaxyand is compared with observations of other important ISM constituents in thecontext of the disk-halo connection, in those cases where published resultswere available. Furthermore, we present the distribution of extraplanar dust inthese galaxies, based on an analysis of the unsharp-masked R-band images. Theresults are compared with the distribution of the diffuse ionized gas.

An Hα survey aiming at the detection of extraplanar diffuse ionized gas in halos of edge–on spiral galaxies