Astrophys. J., 717, 1123-1139 (2010/July-2)
Locating planetesimal belts in the multiple-planet systems HD 128311, HD 202206, HD 82943, and HR 8799.
MORO-MARTIN A., MALHOTRA R., BRYDEN G., RIEKE G.H., SU K.Y.L., BEICHMAN C.A. and LAWLER S.M.
Abstract (from CDS):
In addition to the Sun, six other stars are known to harbor multiple planets and debris disks: HD 69830, HD 38529, HD 128311, HD 202206, HD 82943, and HR 8799. In this paper, we set constraints on the location of the dust-producing planetesimals around the latter four systems. We use a radiative transfer model to analyze the spectral energy distributions of the dust disks (including two new Spitzer IRS spectra presented in this paper), and a dynamical model to assess the long-term stability of the planetesimals' orbits. As members of a small group of stars that show evidence of harboring a multiple planets and planetesimals, their study can help us learn about the diversity of planetary systems.
circumstellar matter - infrared: stars - Kuiper Belt: general - planetary systems - stars: individual (HD 128311, HD 202206, HR 8799, HD 82943)
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