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The structure and metallicity gradient in the extreme outer disk of NGC7793

Vlajic, M; Bland-Hawthorn, Joss; Freeman, Kenneth


Studies of outer regions of spirals disks are fundamental to our understanding of both the process of galaxy assembly and the subsequent secular evolution of galaxies. In an earlier series of papers, we explored the extent and abundance gradient in the outer disk of NGC300 and found an extended purely exponential disk with a metallicity gradient which flattens off in the outermost regions. We now continue the study of outskirts of pure disk spirals with another Sculptor Group spiral, NGC7793....[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/732/1/7
Access Rights: Open Access


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