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Issue EAS Publications Series
Volume 10, 2003
JENAM 2002, Galactic & Stellar Dynamics
Page(s) 207
DOI 10.1051/eas:2003151

Galactic & Stellar Dynamics
C. Boily, P. Patsis, S. Portegies Zwart, R. Spurzem and C. Theis (eds)
EAS Publications Series, Vol. 10, 2003

DOI: 10.1051/eas:2003151

What is the warp's favorite halo?

Y. Revaz and D. Pfenniger

Geneva Observatory, 51 Chemin des Maillettes, 1290 Sauverny, Switzerland


Abstract
Since the first HI observations of the Milky Way warp 50 years ago numerous hypotheses have been proposed to explain this common galactic phenomenon. While actually most of the works on warps are based on the assumption of a disk embedded in a dark matter halo, the possibility of a heavy self-gravitating disk is often neglected. The aim of this paper is to better understand the constraints imposed by the shape of the dark component on the dynamics of the warp. Two set of simulations have been performed. The first one is based on a traditional dark matter halo, while the second one uses a heavy flaring self-gravitating disk.



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