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Stellar kinematics of the isolated dwarf irregular WLM
conference contribution
posted on 2023-05-23, 05:28 authored by Leaman, R, Venn, K, Andrew ColeAndrew Cole, Ibata, R, McConnachie, A, Brooks, A, Irwin, M, Skillman, EChemical 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.
History
Publication title
EAS Publishing SeriesVolume
48Editors
M Koleva, Ph Prugniel and I VauglinPagination
59-60Department/School
School of Natural SciencesPublisher
EDP SciencesPlace of publication
In pressEvent title
CRAL - 2010 A Universe of Dwarf GalaxiesEvent Venue
LYON FranceDate of Event (Start Date)
2010-06-14Date of Event (End Date)
2010-06-18Repository Status
- Restricted