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Constraints on the Galactic bar with RAVE
Published online by Cambridge University Press: 06 January 2014
Abstract
We derive the pattern speed of the Galactic bar from the analysis of the kinematics of the Hercules stream at different Galactocentric radii with RAVE, assuming that Hercules is caused by the bar. We find a well constrained pattern speed of Ωb=1.98+0.04−0.08 Ωo, where Ω0 is the local circular frequency.
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- Copyright © International Astronomical Union 2014