Episodic formation of cometary material in the outburst of a young Sun-like star

@article{brahm2009EpisodicFO,
  title={Episodic formation of cometary material in the outburst of a young Sun-like star},
  author={P{\'e}ter {\'A}brah{\'a}m and Attila Juh{\'a}sz and Cornelis Petrus Dullemond and {\'A}gnes K{\'o}sp{\'a}l and Roy van Boekel and Jerone Bouwman and Th. Henning and Attila Mo{\'o}r and L{\'a}szl{\'o} Mosoni and A. Sicilia-Aguilar and Nikoletta Sipos},
  journal={Nature},
  year={2009},
  volume={459},
  pages={224-226}
}
The Solar System originated in a cloud of interstellar gas and dust. The dust is in the form of amorphous silicate particles and carbonaceous dust. The composition of cometary material, however, shows that a significant fraction of the amorphous silicate dust was transformed into crystalline form during the early evolution of the protosolar nebula. How and when this transformation happened has been a question of debate, with the main options being heating by the young Sun and shock heating… 
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