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The Bulge/Halo interface rotational kinematics from [Fe/H] = −3.0 to Solar

Published online by Cambridge University Press:  07 August 2017

Paul Harding  and
Heather Morrison
Paul Harding
Affiliation:
Observatories of the Carnegie Institution of Washington, Pasadena, CA, USA Kitt Peak National Observatory, National Optical Astronomy Observatories, Tucson, AZ, USA
Heather Morrison
Affiliation:
Observatories of the Carnegie Institution of Washington, Pasadena, CA, USA Kitt Peak National Observatory, National Optical Astronomy Observatories, Tucson, AZ, USA

Abstract

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Kinematics and abundances have been determined for a large sample of K giants in a field at ∼2 kpc from the center to study the relationship between the bulge and the halo. There are two different kinematic groups evident. The metal-poor stars have low rotation and high velocity dispersion, and so can be associated with the halo. The metal-richer stars have intermediate rotation. Our data suggest that the bulge and halo could be separate kinematical entities.

Keywords

KinematicsK giantsHalo
Type
Contributed Papers
Information
Symposium - International Astronomical Union , Volume 153: Galactic Bulges , 1993 , pp. 297 - 298
Copyright
Copyright © Kluwer 1993 

References

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