Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.1603m&link_type=abstract
American Astronomical Society, ESS meeting #2, #16.03
Astronomy and Astrophysics
Astronomy
Scientific paper
Debris disks are disks of dust that surround a significant fraction of stars of a wide range of masses and ages. From dust lifetime arguments it is inferred that these dust particles originate from the collision/sublimation of planetesimals, similar to the asteroids, comets and KBOs in our Solar system. Therefore, the presence of debris disk around planet-bearing stars indicate that these stars also harbor planetary systems composed of planets and planetesimals belts. We use Spitzer and new Herschel data to set constraints on the location of these dust-producing planetesimals; we use a radiative transfer model to analyze the spectral energy distributions and images of the dust disks, and a dynamical model to assess the long-term stability of the planetesimals’ orbits. With the new Herschel data, we revisit the question on whether or not debris disks and planets are correlated. These studies can help us learn about the diversity of planetary systems.
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