The galactic habitable zone in barred galaxies

  title={The galactic habitable zone in barred galaxies},
  author={Maria Sundin},
  journal={International Journal of Astrobiology},
  pages={325 - 326}
  • M. Sundin
  • Published 19 September 2006
  • Physics
  • International Journal of Astrobiology
One of the criteria for the concept of a galactic habitable zone (GHZ) is that the pattern speed of the stars in the GHZ should be close to the pattern speed of the spiral arms. Another criteria is that the stars in it should have a high enough metallicity. In a barred galaxy, the GHZ will be more complicated to define since the bar can change stellar orbits. Many disc galaxies, including the Milky Way, are barred galaxies. The stars in the bar move in a number of fairly complicated orbits… 
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