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Metal-Poor Lithium-Rich Giants in the Radial Velocity Experiment Survey
Gregory R. Ruchti, Jon P. Fulbright, Rosemary F. G. Wyse +17
We report the discovery of eight lithium-rich field giants found in a high resolution spectroscopic sample of over 700 metal-poor stars ([Fe/H]<-0.5) selected from the RAVE survey.…
Kinematics in galactic tidal tails - A source for Hypervelocity stars?
Tilmann Piffl, Mary Williams, Matthias Steinmetz
[abridged] In this work we study in detail the kinematics of tidal debris stars to investigate the implications of the new scenario that the observed sample of Hypervelocity stars…
Observational Properties of the Metal-Poor Thick Disk of the Milky Way Galaxy and Insights into Its Origins
Gregory R. Ruchti, Jon P. Fulbright, Rosemary F. G. Wyse +17
We have undertaken the study of the elemental abundances and kinematic properties of a metal-poor sample of candidate thick-disk stars selected from the RAVE spectroscopic survey o…
Signatures of minor mergers in Milky Way-like disc kinematics: Ringing revisited
Facundo A. Gómez, Ivan Minchev, Álvaro Villalobos +2
By means of N-body simulations we study the response of a galactic disc to a minor merger event. We find that non-self-gravitating, spiral-like features are induced in the thick di…
High resolution elemental abundance analysis of the Hyades Supercluster
G. M. De Silva, K. C. Freeman, J. Bland-Hawthorn +3
The existence of a kinematically defined moving group of stars centred at U = -40, V = -17 km/s referred to as the Hyades Supercluster, has been suggested as the debris of an origi…