Study of solar-type stars with planets, planetesimals and dust

Details Study of solar-type stars with planets, planetesimals and dust Study of solar-type stars with planets, planetesimals and dust

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40412m&link_type=abstract

Spitzer Proposal ID #40412

Physics

Scientific paper

We propose to estimate the location of the dust and the parent planetesimals in six of the nine planetary systems known to date to harbor both giant planets and debris disks. These six stars show excess emission at 70 micron but not at 24 microns, implying the presence of an inner region depleted of warm dust, with the bulk of the emission arising from cool material (T<100K) located mainly beyond 10 AU. This means that these stars not only harbor planets but also harbor an outer belt of dust-producing planetesimals and in this regard they resemble the Solar Sytem in its Jovian planets + Kuiper Belt configuration. Detailed SED and dynamical analysis of these systems has not yet been published. The results of this study will increase our understanding of the diversity of planetary systems, and will help us place our Solar System into context.

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