Evidence of tidal debris from Omega Cen in the Kapteyn Group

Details Evidence of tidal debris from Omega Cen in the Kapteyn Group Evidence of tidal debris from Omega Cen in the Kapteyn Group

2009-10-20

arxiv.org/abs/0910.3735v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

30 pages, 9 figures, 11 tables. Accepted for publication in AJ

Scientific paper

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, Omega Centauri. Some members of this moving group may be remnants of the tidal debris of Omega Cen, left in the Galactic disk during the merger event which deposited Omega Cen into the Milky Way.

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