Mathematics – Logic
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..553s&link_type=abstract
In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed
Mathematics
Logic
2
Comets: Comae, Morphology
Scientific paper
The results of the morphological analysis of the comae of nine comets belonging to different dynamical classes are presented in a comparative overview. The sample includes three short-period, five long-period and one dynamically new comet. Various types of distinct features were detected in seven of the nine investigation comets. They can be divided into stationary and time-variable structures in the gas and/or dust coma. Only two comets showed a periodic pattern in the appearance of coma features, which could be correlated with the rotational properties of the nucleus and with their short-term variations in activity. None of the investigated comets, for which a detailed coma analysis was feasible, exhibited coinciding gas and dust jets. Hence, gas jets with no observable counterparts in the dust appear to be a rather common phenomenon. Both types of jets might therefore not necessarily be related to each other, in other words, they may be formed independently by different processes.
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