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Stellar kinematics of the isolated dwarf irregular WLM


Leaman, R and Venn, K and Cole, AA and Ibata, R and McConnachie, A and Brooks, A and Irwin, M and Skillman, E, Stellar kinematics of the isolated dwarf irregular WLM, EAS Publishing Series, 14-18 June 2010, LYON France, pp. 59-60. (2011) [Refereed Conference Paper]

DOI: doi:10.1051/eas/1148009


Chemical abundances and radial velocities for ∼210 stars in WLM, ∼130 new stars from DEIMOS spectroscopy, and 80 stars from Leaman et al. (2009) are presented. This sample shows that this isolated dwarf has chemically, dynamically, and spatially distinct stellar populations similar to the nearby dwarf spheroidals. The kinematics of the stars appear to be decoupled from the HI gas, which shows a higher rotational velocity profile. This thicker stellar configuration for a distant, isolated dwarf irregular may have implications for timescales of tidal transformation scenarios of infalling galaxies in the Local Group.

Item Details

Item Type:Refereed Conference Paper
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Cole, AA (Associate Professor Andrew Cole)
ID Code:71556
Year Published:2011
Web of Science® Times Cited:1
Deposited By:Physics
Deposited On:2011-07-22
Last Modified:2020-05-21

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