Yeah, but that doesn't mean that what we do see is a mirage.

Space/Science » in reply to it's a dynamic resonance, not a rigid object

RobVG — 9/2/2008 1:17:48 AM (archived)

Yeah, ER's post lead me indirectly to Raouls. Questions about barred spirals are what brought me here.

Is there a way to messure the velocities of stars in the "bars" that would show if they are traversing the bars, either half way around the center, or fully orbiting the center?

The whole thread (7 posts)

From HST: Barred spiral galaxies (like our own) came later - Raoul - 8/3/2008 12:51:53 PM
- Fascinating - RobVG - 9/1/2008 7:01:16 PM
  - it's a dynamic resonance, not a rigid object - n - 9/1/2008 11:45:01 PM
    - Yeah, but that doesn't mean that what we do see is a mirage. - RobVG - 9/2/2008 1:17:48 AM
      - Everything orbits the centre, more or less - nick hoffman - 9/2/2008 8:23:00 AM
  - How does an orbiting star get "locked into place". - RobVG - 9/1/2008 9:20:34 PM
    - I'm puzzled too. - ER - 9/1/2008 11:47:04 PM

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