Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974icar...23..568b&link_type=abstract
Icarus, vol. 23, Dec. 1974, p. 568-576.
Astronomy and Astrophysics
Astronomy
10
Astronomical Photometry, Comet Heads, Infrared Filters, Interplanetary Dust, Kohoutek Comet, Near Infrared Radiation, Fabry-Perot Interferometers, Infrared Astronomy, Light Scattering, Mie Scattering, Scattering Cross Sections
Scientific paper
By means of narrow-band Fabry-Perot filters, which exclude the interference from molecular line fluorescence, the brightness of Comet Kohoutek (1973f) has been measured at 8560 and 8748 A. Data reduction on the basis of averaged Mie-scattering cross sections indicates that the dust production rate was different before and after perihelion at the same heliocentric distances. This asymmetry suggests that vaporization and dust entrainment were governed by fractionation of a multicomponent mixture of parent molecules in a comparatively porous cometary nucleus.
Barbieri Carlo
Cosmovici Cristiano B.
Michel Karl-Wolfgang
Nishimura Takahiro
Roche Aidan E.
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