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Stream-orbit misalignment & a new algorithm for constraining the Galactic potential with streams

Published online by Cambridge University Press:  06 January 2014

Jason L. Sanders  and
James Binney
Jason L. Sanders
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, Keble Road, Oxford, OX1 3NP, UK email: jason.sanders@physics.ox.ac.uk, binney@thphys.ox.ac.uk
James Binney
Affiliation:
Rudolf Peierls Centre for Theoretical Physics, Keble Road, Oxford, OX1 3NP, UK email: jason.sanders@physics.ox.ac.uk, binney@thphys.ox.ac.uk
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Abstract

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In general, a tidal stream is misaligned with the orbit of its progenitor. Here we present the formation of tidal streams in angle-action space to discuss the effect of this misalignment on orbit-fitting algorithms for constraining the Galactic potential. We close by presenting and testing an alternative algorithm which more fully accounts for the dynamics of streams by using the angle-action formalism.

Keywords

Galaxy: kinematics and dynamicshalostructure – methods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 195 - 200
Copyright
Copyright © International Astronomical Union 2014 

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