Warm dust in systems with transiting planets

Details Warm dust in systems with transiting planets Warm dust in systems with transiting planets

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..475k&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.475

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Scientific paper

Debris disks are known to exist around many planethost stars, but no debris dust has been discovered so far in systems with planets detected by the transit method. We have found six systems, each with one transiting "hot Jupiter", that possess significant excess emission in themid-infrared. These are CoRoT-14, XO-5, HATP- 5, TrES-2, CoRoT-10, and CoRoT-8. Modeling suggests that the observed excesses stem from dust rings with radii between about 0.1 AU and 25 AU and dust masses in the range from about 10-7 to 10-3 Earth masses. In some systems dust may be produced by collisional cascade in asteroid belt analogs, while in some others a transient nature of dust appears more likely. The presence of debris dust may put important constraints onto scenarios of formation and migration of hot Jupiters.

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