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On the dynamics of the Small Magellanic Cloud through high-resolution ASKAP HI observations

Di Teodoro, Enrico Maria; McClure-Griffiths, Naomi; Jameson, Katherine; Denes, Helga; Dickey, John; Stanimirovic, Snezana; Staveley-Smith, Lister; Anderson, Carol R.; Bunton, J. D.; Chippendale, A. P.; Lee-Waddell, K.; Macleod, A.; Voronkov, M. A.


We use new high-resolution H I data from the Australian Square Kilometre Array Pathfinder to investigate the dynamics of the Small Magellanic Cloud (SMC). We model the H I gas component as a rotating disc of non-negligible angular size, moving into the plane of the sky, and undergoing nutation/precession motions. We derive a high-resolution (∼10 pc) rotation curve of the SMC out to R∼4kpc⁠. After correcting for asymmetric drift, the circular velocity slowly rises to a maximum value of...[Show more]

CollectionsANU Research Publications
Date published: 2018-11-30
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/sty3095


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