Extreme collisions between planetesimals as the origin of warm dust around a Sun-like star

  title={Extreme collisions between planetesimals as the origin of warm dust around a Sun-like star},
  author={Inseok Song and Ben Zuckerman and Alycia J. Weinberger and Eric Edward Becklin},
The slow but persistent collisions between asteroids in our Solar System generate a tenuous cloud of dust known as the zodiacal light (because of the light the dust reflects). In the young Solar System, such collisions were more common and the dust production rate should have been many times larger. Yet copious dust in the zodiacal region around stars much younger than the Sun has rarely been found. Dust is known to orbit around several hundred main-sequence stars, but this dust is cold and… 
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