The lifetime of galactic bars: central mass concentrations and gravity torques

@article{Bournaud2005TheLO,
  title={The lifetime of galactic bars: central mass concentrations and gravity torques},
  author={Fr{\'e}d{\'e}ric Bournaud and Françoise Combes and Beno{\^i}t Semelin},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2005},
  volume={364}
}
Bars in gas-rich spiral galaxies are short-lived. They drive gas inflows through their gravity torques, and at the same time self-regulate their strength. Their robustness has been subject of debate, as it was thought that only the resulting central mass concentrations (CMCs) were weakening bars, and only relatively rare massive CMCs were able to completely destroy them. Through numerical simulations including gas dynamics, we find that with the gas parameters of normal spiral galaxies, the CMC… Expand

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