Abstract
Observations have been made of a large sample of Vega-excess stars. Midinfrared spectra show silicate dust features and also the UIR bands, implying the presence of hydrocarbon material. Millimetre-wave photometry indicates the presence of large amounts of cool material, while near-IR photometry reveals an excess in several stars, which we ascribe to transiently-heated very small grains.
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Sylvester, R.J., Barlow, M.J. & Skinner, C.J. Observations of dust emission from vega-excess stars. Astrophys Space Sci 224, 405–408 (1995). https://doi.org/10.1007/BF00667881
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DOI: https://doi.org/10.1007/BF00667881