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THE IONIZED GAS IN NEARBY GALAXIES AS TRACED BY THE[N II] 122 AND 205 mu m TRANSITIONS

Herrera-Camus, R.; Bolatto, Alberto; Smith, J. D.; Draine, Bruce T; Pellegrini, E.; Wolfire, M.; Croxall, K V; de Looze, I.; Calzetti, Daniela; Kennicutt, Robert C; Brandl, Bernhard R; Armus, Lee; Groves, Brent Allan; Walter, Fabian; Beirao, P.

Description

The [N ii] 122 and 205 μm transitions are powerful tracers of the ionized gas in the interstellar medium. By combining data from 21 galaxies selected from the Herschel KINGFISH and Beyond the Peak surveys, we have compiled 141 spatially resolved regions with a typical size of ~1 kpc, with observations of both [N ii] far-infrared lines. We measure [N ii] 122/205 line ratios in the ~0.6–6 range, which corresponds to electron gas densities of n e ~ 1–300 cm−3, with a median value of n e = 30 cm−3....[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
URI: http://hdl.handle.net/1885/152155
Source: The Astrophysical Journal
DOI: 10.3847/0004-637X/826/2/175
Access Rights: Open Access

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