학술논문
Production rates of gases and solids in Comet P/Halley during the 1986 apparition
Document Type
Text
Author
Source
Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 1987 Volume:63-70 | Number:67
Subject
Language
Czech
Abstract
From photoeIectric photometry at our 90-cm telescope we derived continuum and emlssion band fluxes within the bandpasses of the.standard IHW filters. These data were converted to give product ion rates for CN, C3, C2,and soIids. The observations cover the range of pre-periheIion distances from'^2.1 AU to 1.1 AU and include one post-periheI ion measurement at 1.7 AU. The product ion rates of the gaseous components show a strong dependence on heliocentric distance. The result is compared with the behaviour of other comets and theoretical considerations. The dependence is less steep for the solids. This may be due to relatively pronounced backscattering of the grains. During one pre-perihe ion night (r = 1.5 AU) intensity profiles along three sections through the coma of P/Halley were measured. Compared with the Haser model the profiles show a global anisotropy of the coma and possibly local structure.