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Kinematic trends in young and old stars

Published online by Cambridge University Press:  02 August 2018

Jennifer Wojno ,
Georges Kordopatis Open the ORCID record for Georges Kordopatis [Opens in a new window] ,
Matthias Steinmetz ,
Paul J. McMillan  and
the RAVE collaboration
Jennifer Wojno
Affiliation:
Leibniz Institut für Astrophysik Potsdam, Potsdam, Germany
Georges Kordopatis
Affiliation:
Laboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, Nice, France
Matthias Steinmetz
Affiliation:
Leibniz Institut für Astrophysik Potsdam, Potsdam, Germany
Paul J. McMillan
Affiliation:
Lund Observatory, Lund University, Lund, Sweden
the RAVE collaboration
Affiliation:
Leibniz Institut für Astrophysik Potsdam, Potsdam, Germany Laboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, Nice, France Lund Observatory, Lund University, Lund, Sweden
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Abstract

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Using RAVE DR5, we explore the age, kinematic, and chemical correlations of a sample of  30,000 FGK stars. We separate a sample of turnoff stars into two age groups: young and old. For each of the two age groups, we calculate kinematic trends as a function of Galactocentric radius (R), for different metallicity ([Fe/H]) bins. For both young and old stars, we measure a negative gradient in ∂〈VR〉/∂R. In addition, for young stars we find a correlation between the magnitude of the slope and metallicity, with the most metal-rich bins having the steepest gradient and the most metal-poor bins having a flatter trend.

Keywords

stars: agesstars: abundancesstars: kinematics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 385 - 386
Copyright
Copyright © International Astronomical Union 2018 

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