Transience of Hot Dust around Sun-like Stars

  title={Transience of Hot Dust around Sun-like Stars},
  author={Mark C. Wyatt and R. J. Smith and J. S. Greaves and Charles A. Beichman and Geoffrey C. Bryden and Carey M. Lisse},
  journal={The Astrophysical Journal},
  pages={569 - 583}
In this paper a simple model for the steady state evolution of debris disks due to collisions is developed and confronted with the properties of the emerging population of seven Sun-like stars that have hot dust at <10 AU. The model shows that there is a maximum possible disk mass at a given age, since more massive primordial disks process their mass faster. The corresponding maximum dust luminosity is fmax = 0.16 × 10-3r7/3t, where r is disk radius in AU and tage is system age in Myr. The… 

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