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  Dynamics of the Milky Way Bar/Bulge

Gerhard, O. (2019). Dynamics of the Milky Way Bar/Bulge. Cambridge, UK: Cambridge University Press.

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Dynamics of the Milky Way Bar Bulge.pdf (Any fulltext), 361KB
 
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 Creators:
Gerhard, Ortwin1, Author              
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: Stellar surveys and dynamical models have recently led to important progress on understanding the dynamical structure of the Milky Way’s bar and central box/peanut bulge. This talk briefly reviews the density structure of the bulge and bar from star count tomography, the cylindrical rotation of bulge stars, and the measurements of their stellar masses and pattern speed that have been obtained by fitting dynamical models to the combined star count and line-of-sight velocity data. Recent work deriving absolute proper motions throughout the bulge from the VIRAC survey and Gaia has led to a new 3D measurement of the barred bulge kinematics which is expected to greatly improve the dynamical models, and has already confirmed the relatively slow pattern speed (∼40 kms−1 kpc−1) obtained from the previous dynamical and gas-dynamical modelling.

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Language(s): eng - English
 Dates: 2020-05-142019-06
 Publication Status: Published in print
 Pages: -
 Publishing info: Cambridge, UK : Cambridge University Press
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: Other: LOCALID: Reihe: IAU...353
ISBN: 9781108482486
 Degree: -

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Title: 353nd Symposium of the International Astronomical Union
Place of Event: Shanghai, China
Start-/End Date: 2019-06-30 - 2019-07-05

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Title: Proceedings of the International Astronomical Union
Source Genre: Series
 Creator(s):
Monica Valluri, Editor              
J. A. Sellwood, Editor              
Affiliations:
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Publ. Info: Cambridge, UK : Cambridge University Press
Pages: - Volume / Issue: 14/S353 Sequence Number: - Start / End Page: 26 - 28 Identifier: ISSN: 1743-9213