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Mapping electron temperature variations across a spiral arm in ngc 1672

Groves, Brent Allan; Ho, I Ting; Kreckel, K.; Meidt, Sharon E.; Blanc, Guillermo A; Bigiel, Frank; Dale, Daniel A; Emsellem, Eric; Glover, Simon C O; Grasha, Kathryn; Kewley, Lisa; Kruijssen, J M Diederik; Lang, Philipp


We report one of the first extragalactic observations of electron temperature variations across a spiral arm. Using Multi Unit Spectroscopic Explorer mosaic observations of the nearby galaxy NGC 1672, we measure the [N ii]λ5755 auroral line in a sample of 80 H ii regions in the eastern spiral arm of NGC 1672. We discover systematic temperature variations as a function of distance perpendicular to the spiral arm. The electron temperature is lowest on the spiral arm itself and highest on the...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Astrophysical Journal Letters
DOI: 10.3847/2041-8213/ab4feb
Access Rights: Open Access


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