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Information × Registration Number 0205U007435, 0105U006892 , R & D reports Title Observation and model interpretation of physical properties of comets popup.stage_title Head Borysenko S.A., Registration Date 28-12-2005 Organization Main Astronomical Observatory popup.description2 Distribution of molecules in the cometary atmosphere and gas production rates (CN, C2, C3, NH2) for comets С/2004 Q2 (Machholz) and 9Р/Tempel 1 were obtained. The spectra (including echelle) for comet C/2004 Q2 (Machholz) in spectral range 300-900 nm were obtained and identified. Both temperature and sublimation regime of an active region on the comet Wild-2 considered as a conical and cylindrical hole in dust layer are calculated. All the calculations are carried out for the case, when the season effects are distinctly expressed. The temperature is defined from the geometrical parameters of the active region separately for ice (CO, CO2, H2O) bottom and dust walls. Evolution of dust tail for comet C/2001 K5 (LINEAR) was modeled with single number of model parameters. As was shown, the basic constituent of dust is ice with dissemination of refractory touch. Typical size of specks is 5-100 mk.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close