- Driving gas into Galactic centers
- opposing torques at corotation point drives gas inward
- observational evidence from nearby galaxies
- barred galaxies have greater concentration (Sheth et al 2005)
- observations of CO gas kinematics in M83, NGC 1097
+ FCRAO Quarry obs
- ALMA concentration to M83 core...
+ high velocity gas near core
+ southern nucleus has spatially distinct outflow lobes
Questions
- Q Fred Lo: Can you distinguish between streamline convergence and cloud
collisions? Can you determine what happens when clouds collide?
- A: Yes, with ALMA.
- Q Farhad: Physical conditions in NGC 253. Temperature distribution? All
warm?
- A: Our obs don't measure temperature. CO gives 50K on 10's of pc scales, so
at least that temperature.
- Q: Big bubbles in NGC 253. Are there clusters near them?
- A: Didn't find any in original data.