ALMA Mapping of Rapid Gas and Dust Variations in Comet C/2012 S1 (ISON):New Insights into the Origin of Cometary HNC

@inproceedings{Cordiner2017ALMAMO,
  title={ALMA Mapping of Rapid Gas and Dust Variations in Comet C/2012 S1 (ISON):New Insights into the Origin of Cometary HNC},
  author={Martin A. Cordiner and J'er'emie Boissier and Steven B. Charnley and Anthony J. Remijan and Michael J. Mumma and Guillermo Villanueva and Dariusz C. Lis and Stefanie N. Milam and Lucas Paganini and J. Crovisier and Dominique Bockel'ee-Morvan and Y. H. Kuan and Nicolas Biver and Iain M. Coulson},
  year={2017}
}
  • Martin A. Cordiner, J'er'emie Boissier, +11 authors Iain M. Coulson
  • Published 2017
  • Physics
  • Observations of the sungrazing comet C/2012 S1 (ISON) were carried out using the Atacama Large Millimeter/submillimeter Array at a heliocentric distance of 0.58–0.54 au (pre-perihelion) on 2013 November 16–17. Temporally resolved measurements of the coma distributions of HNC, CH3OH, H2CO, and dust were obtained over the course of about an hour on each day. During the period UT 10:10–11:00 on November 16, the comet displayed a remarkable drop in activity, manifested as a >42% decline in the… CONTINUE READING

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