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Tick, Tock, Tick, Tock...

Published online by Cambridge University Press:  17 July 2015

N.W. Evans  and
M. Molloy
N.W. Evans
Affiliation:
Institute of Astronomy, Cambridge, UK
M. Molloy
Affiliation:
Kavli Institute for Astronomy & Astrophysics, Peking University, Beijing, China
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Abstract

The Gaia dataset will require a huge leap forward in terms of modelling of the Milky Way. Two problems are highlighted here. First, models of the Galactic Bar remain primitive as compared to the Galactic Disk and Stellar Halo. Although Schwarzschild and N-body methods are useful, the future belongs to Made-to-Measure (M2M) models which have significant advantages in terms of storage and flexibility. Second, the Milky Way potential will need much better representation than hitherto. Most models still use very simple building blocks (Miyamoto-Nagai disks or Hernquist bulges) and these will not be fit for purpose in the Gaia Era. Expansions in terms of basis functions offer the possibility of incorporating cosmological information as priors, as well as mych greater adaptability.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 68: The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases , 2014 , pp. 41 - 48
Copyright
© EAS, EDP Sciences, 2015

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