Parent Volatiles in Comet 9P/Tempel 1: Before and After Impact

  title={Parent Volatiles in Comet 9P/Tempel 1: Before and After Impact},
  author={Michael J. Mumma and Michael A. DiSanti and Karen Patricia Magee-Sauer and Boncho P. Bonev and Geronimo L. Villanueva and Hideyo Kawakita and Neil Dello Russo and Erika L. Gibb and Geoffrey A. Blake and James E Lyke and Randall D. Campbell and Joel Aycock and Albert Conrad and G. M. Hill},
  pages={270 - 274}
We quantified eight parent volatiles (H2O, C2H6, HCN, CO, CH3OH, H2CO, C2H2, and CH4) in the Jupiter-family comet Tempel 1 using high-dispersion infrared spectroscopy in the wavelength range 2.8 to 5.0 micrometers. The abundance ratio for ethane was significantly higher after impact, whereas those for methanol and hydrogen cyanide were unchanged. The abundance ratios in the ejecta are similar to those for most Oort cloud comets, but methanol and acetylene are lower in Tempel 1 by a factor of… 
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