Observations of dust emission from vega-excess stars |
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| Authors: | R J Sylvester M J Barlow C J Skinner |
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| Institution: | (1) Department of Physics and Astronomy, University College London, Gower Street, WC1E 6BT London, U.K.;(2) Institute of Geophysics and Planetary Physics, L-413, Lawrence Livermore National Laboratory, P.O Box 808, CA94551-9900 Livermore, USA;(3) Present address: Space Telescope Science Institute, 3700 San Martin Drive, 21218 Baltimore, MD, USA |
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| 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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| Keywords: | Stars main-sequence spectra infra-red dust UIR bands |
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