Computer Science
Scientific paper
Mar 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop..291l&link_type=abstract
Spitzer Proposal ID #291
Computer Science
Scientific paper
Comet McNaught 2006 (P1) is one of the most awe-inspiring comets of modern times, rivaling the two most spectac ular modern comets C/West 1975 and C/Hale-Bopp 1995 O1. Unremarkable and almost completely unstudied until shortly before its perihelion passage in December 2006, this comet became unexpectedly bright and active on the incoming leg of its close perihelion passage (q = 0.17 AU). McNaught is dynamically new from the Oort cloud, meaning that it has not passed through the inner solar system since its formation and ejection from the giant planet region of the Proto-Solar Nebula 4.5 Byrs ago, and its composition appears highly unusual, rich in H2O and NH3 but poor in CO and CH4. It is emitting large amounts of near-pristine PSN material easily detectable by Spitzer during an April 27 - May 18 IRS window of opportunity. Observations of this material promise to be as paradigm changing as the ISO observations of Hale-Bopp in 1996.
Dello Russo Neil
Fernandez Yanga
Jones Gail
Lisse Carey
Sitko Michael
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