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- W4296592050 abstract "Hα images and long-slit spectra of NGC 891 show the presence of a thick layer of diffuse ionized gas (DIG) in this edge-on galaxy. Hα emission originating in the DIG of NGC 891 is detected out to several kpc above the midplane with a typical scale height for the electron density n e (z) of h e ~ 600 pc. The distribution of the gas is very inhomogeneous with a large scale asymmetry and filamentary structure. Individual Hα emitting structures can be traced out to 4-5 kpc above the midplane. The emission line ratios of [NII] and [SII] to Hα vary with height above the disk. We compare these properties with the analogous gas phase in our Galaxy. The distribution of the DIG is related to star formation in the underlying galactic disk and we conclude that in NGC 891 the interstellar medium is heavily effected by processes related to star formation." @default.
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- W4296592050 date "1991-01-01" @default.
- W4296592050 modified "2023-09-26" @default.
- W4296592050 title "The Diffuse Ionized Gas Perpendicular to the Plane of NGC 891" @default.
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- W4296592050 doi "https://doi.org/10.1017/s0074180900089191" @default.
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