Mid-Infrared Spectra of Dust Debris around Main-Sequence Stars

Details Mid-Infrared Spectra of Dust Debris around Main-Sequence Stars Mid-Infrared Spectra of Dust Debris around Main-Sequence Stars

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1707c&link_type=abstract

American Astronomical Society Meeting 205, #17.07; Bulletin of the American Astronomical Society, Vol. 36, p.1365

Astronomy and Astrophysics

Astronomy

Scientific paper

We report spectra obtained with the Spitzer Space Telescope in the λ = 5 - 35 μ m 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 μ m. 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.

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