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The density model of the Milky Way from the tangent-point measurements of the rotation curve

Published online by Cambridge University Press:  21 March 2013

Oleksiy Golubov  and
Andreas Just
Oleksiy Golubov
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany, email: golubov@ari.uni-heidelberg.de
Andreas Just
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany, email: golubov@ari.uni-heidelberg.de
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Abstract

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We use measurements of the rotation curve of the Milky Way by the tangent point method to reconstruct the density model of the Milky Way. The observed inner rotation curve is fitted by a theoretical density model, consisting of a Dehnen bulge, an exponential disc with a hole, and a flattened dark matter halo with a cored isothermal or NFW density profile. The density model is also set to be consistent with the local density constraints in the solar neighborhood.

Keywords

Galaxy: kinematics and dynamics — solar neighborhood
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 101
Copyright
Copyright © International Astronomical Union 2013

References

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Sofue, Y., Honma, M., & Omodaka, T. 2009, PASJ, 61, 227CrossRefGoogle Scholar