The activity of comet 29P/Schwassmann-Wachmann 1 monitored through the CO J(2-1) emission line at 230 GHz.

Details The activity of comet 29P/Schwassmann-Wachmann 1 monitored through the CO J(2-1) emission line at 230 GHz. The activity of comet 29P/Schwassmann-Wachmann 1 monitored through the CO J(2-1) emission line at 230 GHz.

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997msngr..89...18f&link_type=abstract

The Messenger, vol. 89, p. 18-20

Physics

1

Periodic Comets: Activity, Periodic Comets: Emission Lines, Periodic Comets: Carbon Monoxide

Scientific paper

CO J(2-1) emission from comet 29P/Schwassmann-Wachmann 1 at 230 GHz was observed on 16 occasions with the 15-m SEST antenna from 4 December 1996 until 2 January 1997. A clear signal was detected in all daily averaged spectra, and day-to-day nuclear output variations by a factor ≡2 were observed. The line position and shape showed remarkably stable characteristics, which justified to combine the spectra to produce line profiles with S/N greatly enhanced over previous observations of the same kind. Whatever the ultimate model proposed to explain the observations, important implications for the understanding of how CO molecules are stored in the nucleus and later released into the coma may be derived from this data set.

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