Mathematics – Logic
Scientific paper
Oct 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005nrdd.conf...38w&link_type=abstract
Proceedings of the Miniworkshop on Nearby Resolved Debris Disks. October 19-20, 2005. Space Telescope Science Institute, Baltimo
Mathematics
Logic
Scientific paper
High-resolution images reveal details of debris disk morphology that shed light on their role in the evolution of planetary systems. However, many key questions remain unanswered at available levels of angular resolution. To infer the maximum detail without over-interpretion, we use a Bayesian model-fitting approach that combines multi-wavelength measurements at varying degrees of spatial resolution. We illustrate this technique with data sets on nearby debris disks that highlight Keck thermal infrared imaging at wavelengths from 12 to 25 microns. Inferred morphological details include: 1) Four non-coplanar dust rings around Beta Pictoris at radial distances of 14, 28, 52 and 82 AU; 2) an inner exozodiacal dust component and two-component outer ring around HR 4796A, and 3) an azimuthally asymmetric disk around 49 Cet with a possible inner gap at 50 AU. As higher resolution images become available in a new era of 20+ meter telescopes, the Bayesian approach can ensure that the maximum use can be made of the richer data sets.
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