Modeling of Debris Disks Resolved with Spitzer and HST

Astronomy and Astrophysics – Astronomy

Scientific paper

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Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Spectroscopy And Spectrophotometry, Interstellar Dust Grains, Diffuse Emission, Infrared Cirrus, Astrometric And Interferometric Instruments

Scientific paper

We summarize our ongoing effort to understand nearby debris disks through combined modeling of Spitzer MIPS imaging photometry, Spitzer IRS spectra, and HubbleSpaceTelescope scattered light images. A simple single-component model with minimum grain sizes equal to the blowout size works in two of four systems studied. Inner dust belts unseen by HST are required in two of four systems. The case of HD 10647 appears the most complex, where more than two dust belts may be needed.

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