Previous | Session 17 | Next
C. H. Chen (JPL), G. C. Sloan (Cornell), L. D. Keller (Ithaca College), M. Jura (UCLA), W. J. Forrest, D. M. Watson (Rochester), IRS Disks Team
We report spectra obtained with the \emph{Spitzer Space Telescope} in the \lambda = 5 - 35 \mum range around some ~100 nearby main-sequence stars with infrared excesses. The stars with strong dust emission show no recognizable spectral features, suggesting that the bulk of the emitting particles have diameters larger than 10 \mum. We present possible models for the spatial distribution of the dust including continuous disks (for example disks whose surface density distributions are determined by the Poynting-Robertson Effect) and single temperature grains. We infer minimum masses of the parent body population if the observed dust results from collisional grinding of larger solids.
Previous | Session 17 | Next
Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.