SparsePak Observations of Diffuse Ionized Gas Halo Kinematics in NGC 891

preprint2005arXivOpen access

Abstract

We present WIYN SparsePak observations of the diffuse ionized gas (DIG) halo of NGC 891. Preliminary results of an analysis of the halo velocity field reveal a clear gradient of the azimuthal velocity with z which agrees with results for the neutral gas. The magnitude of the gradient has been determined, using two independent methods, to be approximately 15 km/s/kpc.

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