Evidence for Water in the Rocky Debris of a Disrupted Extrasolar Minor Planet

@article{Farihi2013EvidenceFW,
  title={Evidence for Water in the Rocky Debris of a Disrupted Extrasolar Minor Planet},
  author={Jay Farihi and Boris T. G{\"a}nsicke and Detlev Koester},
  journal={Science},
  year={2013},
  volume={342},
  pages={218 - 220}
}
Remnants of a Water-Bearing World Stars like the Sun end their lives as white dwarfs. Farihi et al. (p. 218) used detailed spectroscopic analysis of a debris-accreting white dwarf, along with knowledge that such systems accrete this debris from remnants of rocky planetary bodies, to derive the water content in a disrupted extrasolar body. The findings suggest that the white dwarf contains the signature of a rocky minor planet composed of 26% water by mass. Spectroscopic analysis of a debris… 
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