Physics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...37..141y&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 37, Feb. 1987, p. 141-146.
Physics
2
Comet Nuclei, Crystals, Ice, Halley'S Comet, Perihelions, Sublimation, Surface Layers, Water
Scientific paper
Arguments are presented to suggest that surface layers of the nuclei of periodic comets consist of crystallized rather than amorphous water ice, and thermal modeling of such nuclei is presented. The rate of sublimation of water from a rotating nucleus is found to be greater than that from a uniformly heated nucleus. When the model is applied to P/Halley, the sublimation rate at perihelion is found to be 8.1 x 10 to the 29th mol/s for a nucleus rotating with a period of 50 hours, and 7.6 x 10 to the 29th for a uniformly heated nucleus, on the premise that the effective radius of the nucleus is 2.5 km. The total sublimation of water per revolution is 5.38 x 10 to the 36th molecules for P/Halley and 3.91 x 10 to the 36th molecules per P/Crommelin. The result so obtained is discussed in relation to the observational data.
Hatta N.
Yabushita Shin
No associations
LandOfFree
A thermal modelling of cometary activity with a crystallized water ice nucleus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A thermal modelling of cometary activity with a crystallized water ice nucleus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A thermal modelling of cometary activity with a crystallized water ice nucleus will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1012124