Constraints on the Galactic bar with RAVE
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.
- Publication:
-
Setting the scene for Gaia and LAMOST
- Pub Date:
- January 2014
- DOI:
- 10.1017/S1743921313006625
- Bibcode:
- 2014IAUS..298..395A
- Keywords:
-
- Galaxy: disk;
- evolution;
- kinematics and dynamics