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High-Resolution Dark Matter Density Profiles of Things Dwarf Galaxies: Correcting for Noncircular Motions

Oh, Se; de Blok, W J G; Walter, Fabian; Brinks, Elias; Kennicutt, Robert C

Description

We present a new method to remove the impact of random and small-scale noncircular motions from H I velocity fields in (dwarf) galaxies in order to better constrain the dark matter properties for these objects. This method extracts the circularly rotating velocity components from the H I data cube and condenses them into a so-called bulk velocity field. We derive high-resolution (0.2 kpc) rotation curves of IC 2574 and NGC 2366 based on bulk velocity fields derived from The H I Nearby Galaxy...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/26699
Source: Astronomical Journal
DOI: 10.1088/0004-6256/136/6/2761

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