Journal
ASTROPHYSICAL JOURNAL
Volume 705, Issue 1, Pages 314-327Publisher
IOP Publishing Ltd
DOI: 10.1088/0004-637X/705/1/314
Keywords
circumstellar matter; infrared: stars; planetary systems; stars: individual (HR 8799)
Categories
Funding
- NASA [1255094, 1256424]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0806828] Funding Source: National Science Foundation
Ask authors/readers for more resources
We have obtained a full suite of Spitzer observations to characterize the debris disk around HR 8799 and to explore how its properties are related to the recently discovered set of three massive planets orbiting the star. We distinguish three components to the debris system: (1) warm dust (T similar to 150 K) orbiting within the innermost planet; (2) a broad zone of cold dust (T similar to 45 K) with a sharp inner edge orbiting just outside the outermost planet and presumably sculpted by it; and (3) a dramatic halo of small grains originating in the cold dust component. The high level of dynamical activity implied by this halo may arise due to enhanced gravitational stirring by the massive planets. The relatively young age of HR 8799 places it in an important early stage of development and may provide some help in understanding the interaction of planets and planetary debris, an important process in the evolution of our own solar system.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available