Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981esasp.174....3n&link_type=abstract
In ESA The Comet Halley Dust and Gas Environ. p 3-18 (SEE N82-23095 13-91)
Astronomy and Astrophysics
Astronomy
23
Calibrating, Gas Density, Halley'S Comet, Interplanetary Dust, Luminous Intensity, Particle Flux Density, Astronomical Models, Light Curve, Line Spectra, Tables (Data), Ultraviolet Photometry, Visual Photometry
Scientific paper
The semiempirical photometric theory of cometary gas and dust production is recalibrated using UV observations from 14 comets and uniform visual photometry from 8 comets. The calibration is not changed significantly but becomes more secure. The complete theory is presented with all approximations evaluated and explained. Numerical calibration aspects are presented in tables. The theory is applied to P/Halley using a light curve without the artifact caused by the close approach to Earth in 1910. Gas production rates predicted for the 1985/86 apparition are similar to those for 1910.
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