NASA NTRS · 19920051474
Silicate dust in a Vega-excess system
Abstract
The 10-micron spectrum of the K5V star SAO 179815 (= HD 98800) is presented, and conclusively demonstrates the presence of small silicate dust grains around this star. The 9.7-micron silicate dust feature is unusually broad and shallow in this system. This, together with the slow fall-off of flux at longer wavelengths, constrains the size and density distributions of dust grains in models of the disk. It is found that there must be a significant population of small grains, as well as a population of large grains in order to explain all the observed properties of the disk.
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Skinner, C. J., Barlow, M. J., Justtanont, K.. 1992-04-01. Silicate dust in a Vega-excess system. https://ntrs.nasa.gov/citations/19920051474
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