Dynamically possible pattern speeds of double bars

Details Dynamically possible pattern speeds of double bars Dynamically possible pattern speeds of double bars

2009-03-13

arxiv.org/abs/0903.2485v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

6 pages; to appear in "Pattern Speeds along the Hubble Sequence", E. M. Corsini and V. P. Debattista (eds.), Memorie della Soc

Scientific paper

The method to study oscillating potentials of double bars, based on invariant loops, is introduced here in a new way, intended to be more intelligible. Using this method, I show how the orbital structure of a double-barred galaxy (nested bars) changes with the variation of nuclear bar's pattern speed. Not all pattern speeds are allowed when the inner bar rotates in the same direction as the outer bar. Below certain minimum pattern speed orbital support for the inner bar abruptly disappears, while high values of this speed lead to loops that are increasingly round. For values between these two extremes, loops supporting the inner bar extend further out as its pattern speed decreases, and they become more eccentric and pulsate more. These findings do not apply to counter-rotating inner bars.

Affiliated with

Also associated with

No associations

Rating

Dynamically possible pattern speeds of double bars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamically possible pattern speeds of double bars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamically possible pattern speeds of double bars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-235558