Physico-Chemical Modeling of Observations of Comets Hale-Bopp and Hyakutake

丹尼尔·博伊斯西南研究所，AST99-73186。Boice和Huebner继续他们对彗星核心的理论研究，重点是最近的Hale-Bopp彗星和Hyakutaken彗星。他们将使用尘埃、反应性、流体动力学模型来解释最近许多观测的结果，并在建模中加入其他特征，试图更好地描述这两颗最近的彗星。他们在这项研究中的具体目标是更好地了解两颗彗星中CO源的性质，C2、CN、CH和C3等分子的母体和附加源，气体和尘埃之间的相互作用，彗发中HCN的性质，以及新的解离重组速率对重要物种丰度的影响。该项目的更大目标是通过吸收各种陆基和天基数据的全球模拟来了解彗星。

Boice, DanielSouthwest Research InstituteAST 99-73186Drs. Boice and Huebner continue their theoretical investigations of the nuclei of comets, focusing on the recent comets Hale-Bopp and Hyakutake. They will use dusty, reactive, fluid dynamics models to interpret the results of many recent observations, and include additional features in their modeling to attempt to better characterize these two recent comets. Their specific goals in this study are to better understand the nature of CO sources in both comets, the parents and additional sources for molecules such as C2, CN, CH, and C3, the interaction between gas and dust, and the nature of HCN in the coma, and the effects of new dissociative recombination rates on the abundances of important species. The larger goal of the project is to understand comets through global simulations that assimilate a wide variety of ground-based and space-based data.