Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227..900c&link_type=abstract
Astrophysical Journal, Part 1, vol. 227, Feb. 1, 1979, p. 900-906. Research supported by the National Research Council of Canad
Astronomy and Astrophysics
Astronomy
28
Cosmic Dust, Diffraction Patterns, Infrared Astronomy, Light Curve, Stellar Envelopes, Stellar Occultation, Density Distribution, Interferometry, Luminous Intensity, Lunar Occultation, Michelson Interferometers, Stellar Models, Visibility
Scientific paper
We describe a procedure by which the fringe visibility, as obtained by using a two-element Michelson interferometer, and an eclipse light curve, as observed during a lunar occultation, can be computed for models of extended circumstellar dust envelopes. The potential value of these measures of angular size in the interpretation of observed circumstellar regions is demonstrated by an investigation of their systematic dependence on various model parameters. An application to IRC +10216 suggests that a model involving two distinct components, such as is currently popular, may not be required to explain the observations.
Crabtree Dennis Richard
Martin Peter G.
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