Journal Article

Analysing surveys of our Galaxy – I. Basic astrometric data

Paul J. McMillan and James Binney

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 419, issue 3, pages 2251-2263
Published in print January 2012 | ISSN: 0035-8711
Published online January 2012 | e-ISSN: 1365-2966 | DOI:
Analysing surveys of our Galaxy – I. Basic astrometric data

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We consider what is the best way to extract science from large surveys of the Milky Way Galaxy. The diversity of data gathered in these surveys, together with our position within the Galaxy, implies that science must be extracted by fitting dynamical models to the data in the space of the observables. Models based on orbital tori promise to be superior for this task than traditional types of models, such as N-body models and Schwarzschild models. A formalism that allows such models to be fitted to data is developed and tested on pseudo-data of varying richness drawn from axisymmetric disc models.

Keywords: methods: data analysis; Galaxy: disc; solar neighbourhood; galaxies: evolution; galaxies: kinematics and dynamics

Journal Article.  11793 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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