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The Various Kinematics of Dwarf Irregular Galaxies in Nearby Groups and their Dark Matter Distributions

Cote, Stephanie; Carignan, C; Freeman, Kenneth

Description

Eight dwarf irregular galaxies, in the two nearby groups of galaxies Sculptor and Centaurus A (at 2.5 Mpc and 3.5 Mpc), have been imaged in neutral hydrogen (H I) with the Australia Telescope and the Very Large Array. These galaxies have absolute magnitudes ranging from MB = -15.7 to -11.3. Yet they are mostly rotationally supported, with maximum velocities going from 19 to 67 km s-1. Multicomponent mass models have been fitted to the rotation curves to investigate the properties of their dark...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
URI: http://hdl.handle.net/1885/88842
Source: Astronomical Journal

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