Theoretical interferometric visibilities across absorption bands in circumstellar shells.

Details Theoretical interferometric visibilities across absorption bands in circumstellar shells. Theoretical interferometric visibilities across absorption bands in circumstellar shells.

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...300..214l&link_type=abstract

Astronomy and Astrophysics, v.300, p.214

Astronomy and Astrophysics

Astrophysics

2

Stars:Carbon, Circumstellar Matter, Radiative Transfer, Techniques: Interferometric

Scientific paper

The interferometric fringe visibility presents a variation across an absorption band. This is due to the variation of the relative contribution of the direct stellar flux. Theoretical visibility curves are presented for two carbon stars (Y Tau and AFGL 799 ) and one oxygen star (α Ori) showing the importance of measurements at several wavelengths across the band. Results deduced from such measurements will provide an improvement of our knowledge of silicate and SiC optical properties. The aim of this work is to encourage interferometrists to developp the infrared interferometry with spectral resolution in 10μm band. A bandwidth of 0.01μm seems enough to display the variation of the visibility for a fixed baseline.

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