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The Vertical Displacement of the Milky Way Disk

Published online by Cambridge University Press:  21 March 2017

Heidi Jo Newberg  and
Yan Xu
Heidi Jo Newberg
Affiliation:
Dept. of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA email: [email protected]
Yan Xu
Affiliation:
Dept. of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA email: [email protected] Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Datun Road 20A, Beijing 100012, PR China email: [email protected]
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Abstract

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An oscillating vertical displacement of the Milky Way, with a wavelength of about 8 kpc and and amplitude of about 100 pc (increasing with distance from the Galactic center) is observed towards the Galactic anticenter. These oscillations are thought to be the result of disk perturbations from dwarf satellites of the Milky Way. They explain the Monoceros Ring and could be related to Milky Way spiral structure.

Keywords

Galaxy: diskGalaxy: kinematics and dynamicsGalaxy: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 13 - 15
Copyright
Copyright © International Astronomical Union 2017 

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