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Paper: The MIR Dust Features of Vega-like Stars: A Comparison With Cometary Spectra
Volume: 294, Scientific Frontiers in Research on Extrasolar Planets
Page: 235
Authors: Butner, H. M.; Wooden, D. H.; Harker, D. E.; Woodward, C. E.
Abstract: Vega-like stars, which are main-sequence (or approaching the main sequence), have substantial debris disks around them. We observed 8-13 micron spectra towards several Vega-like stars. We present models that fit the mid-infrared spectra of the Vega-like stars using the SAME silicate minerals used to fit Comet Hale-Bopp (Wooden et al. 1999). We find that the Hale-Bopp mixture, which contains Mg-rich pyroxene grains - a possible signature of pristine material, fits our Vega-like 8-13 micron spectra extremely well. Models of HD 144432 indicate that pyroxene's Mg-richness might be a sensitive parameter when fitting 8-13 micron spectra.
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