Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21542826s&link_type=abstract
American Astronomical Society, AAS Meeting #215, #428.26; Bulletin of the American Astronomical Society, Vol. 42, p.349
Astronomy and Astrophysics
Astrophysics
5
Scientific paper
Planetary Debris Disks provide unique insights to the formation and evolution of planetary systems similar to our own. Spitzer has brought studies of debris disks and late stages of planet formation into a new regime. Further breakthroughs will be greatly facilitated by assembling the existing data in a uniform and consistent way to determine the average behavior and to find deviant examples that can reveal critical steps in disk evolution. The existing data represent a potentially very important Spitzer legacy for the study of the origin and evolution of extrasolar systems, but they suffer from the following problems: 1.) inhomogeneous data reduction, 2.) inhomogeneous methods for photospheric predictions, leading to various thresholds adopted for identifying infrared excesses, and 3.) inaccurate and/or poorly-known stellar ages. Recently, improvements in data reduction and post-pipeline analysis, including a new method for dating solar-type stars, have been developed and tested thoroughly. In order to realize the legacy that these data represent, we propose to analyze and publish a debris disk catalog for thousands of stars consisting of completed observations in the cryogenic mission. With uniform and state-of-the-art data reduction and analysis approaches, our proposed program will provide a complete census on debris disk evolution around early- and late-type stars, guide plans for follow-up observations with future missions, and provide one of the fundamental legacies of Spitzer.
Support for this work was provided by the NASA Astrophysics Data Analysis Program (ADP) program.
Bryden Geoff
Gaspar Andras
Morales Farisa
Plavchan Peter
Rieke George
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