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Evidence of Omega Cen tidal debris in the Kapteyn moving group

Published online by Cambridge University Press:  09 March 2010

Elizabeth Wylie-de Boer ,
Kenneth Freeman  and
Mary Williams
Elizabeth Wylie-de Boer
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT, Australia, 2611 email: ewylie@mso.anu.edu.au, kcf@mso.anu.edu.au
Kenneth Freeman
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston Creek, ACT, Australia, 2611 email: ewylie@mso.anu.edu.au, kcf@mso.anu.edu.au
Mary Williams
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany email: mary@aip.de
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Abstract

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This paper presents a detailed kinematic and chemical analysis of 16 members of the Kapteyn moving group. The group does not appear to be chemically homogenous. However, the kinematics and the chemical abundance patterns seen in 14 of the stars in this group are similar to those observed in the well-studied cluster, ω Centauri. Some members of this moving group may be remnants of the tidal debris of ω Cen, left in the Galactic disk during the merger event which deposited ω Cen into the Milky Way. A more detailed version of this work can be found in Wylie de-Boer et al. 2009.

Keywords

stars: abundancesstars: kinematicsglobular clusters: individual(ω Centauri)Galaxy: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 263 - 266
Copyright
Copyright © International Astronomical Union 2010

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