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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, E
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.

History

Publication title

EAS Publishing Series

Volume

48

Editors

M Koleva, Ph Prugniel and I Vauglin

Pagination

59-60

Department/School

School of Natural Sciences

Publisher

EDP Sciences

Place of publication

In press

Event title

CRAL - 2010 A Universe of Dwarf Galaxies

Event Venue

LYON France

Date of Event (Start Date)

2010-06-14

Date of Event (End Date)

2010-06-18

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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