Ionizing feedback from massive stars in massive clusters - III. Disruption of partially unbound clouds

  title={Ionizing feedback from massive stars in massive clusters - III. Disruption of partially unbound clouds},
  author={James E. Dale and Barbara Ercolano and Ian A. Bonnell},
  journal={Monthly Notices of the Royal Astronomical Society},
We extend our previous SPH parameter study of the effects of photoionization from O-stars on star-forming clouds to include initially unbound clouds. We generate a set of model clouds in the mass range $10^{4}-10^{6}$M$_{\odot}$ with initial virial ratios $E_{\rm kin}/E_{\rm pot}$=2.3, allow them to form stars, and study the impact of the photoionizing radiation produced by the massive stars. We find that, on the 3Myr timescale before supernovae are expected to begin detonating, the fractions… Expand
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