Development of an H2O Atmosphere around Comet Kohoutek (1973f) and its Possible Detection

Details Development of an H2O Atmosphere around Comet Kohoutek (1973f) and its Possible Detection Development of an H2O Atmosphere around Comet Kohoutek (1973f) and its Possible Detection

Sep 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973natur.245..197i&link_type=abstract

Nature, Volume 245, Issue 5422, pp. 197-199 (1973).

Physics

5

Scientific paper

ALTHOUGH chemically stable ``parent molecules'' like H2O, CH4, NH3 and C2N2, for the observed radicals in comets, have been suspected for more than thirty years1 none of them has yet been observed spectroscopically. But the indirect evidence both for the existence, as well as perhaps the preponderance, of H2O in the nucleus has been growing steadily during the past ten years2-4. In particular the recent observations of two bright long period comets Tago-Sato-Kosaka (1969g) and Bennett (1969i) (as well as P/Encke) both in the vacuum ultraviolet and in the near violet with detectors on orbiters5-8 and rockets9 (which have shown extensive hydrogen and hydroxyl halos) as well as associated numerical models of the neutral atmospheres10-13 strongly suggest H2O as the common parent of both these species.

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