Journal
ASTROPHYSICAL JOURNAL
Volume 603, Issue 2, Pages 738-743Publisher
IOP PUBLISHING LTD
DOI: 10.1086/381700
Keywords
astrobiology; infrared : stars; planetary systems : protoplanetary disks
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Submillimeter and near-infrared images of cool dusty debris disks and rings suggest the existence of unseen planets. At dusty but nonimaged stars, semimajor axes of associated planets can be estimated from the dust temperature. For some young stars these semimajor axes are greater than 100 as seen from Earth. Such stars are excellent targets for sensitive near-infrared imaging searches for warm planets. To probe the full extent of the dust and hence of potential planetary orbits, Spitzer observations should include measurements with the 160 mum filter.
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