An extrasolar giant planet in a close triple-star system

Maciej Konacki ()
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Maciej Konacki: California Institute of Technology

Nature, 2005, vol. 436, issue 7048, 230-233

Abstract: Too close for comfort When extrasolar planets were first detected, many were found to be ‘hot Jupiters’, giant planets orbiting much closer to their host star than predicted. They are now thought to have migrated inwards from their starting points. A newly discovered hot Jupiter poses more problems for theorists. This planet is a little bigger than Jupiter and is orbiting close to the primary star of a triple-star system. But the secondary pair of stars is so close to the primary as to limit the radius of a circumstellar dust disk — raw material for planets — to just half of the present orbital radius of this hot Jupiter. And the temperature that close to a star would have been too high for giant plant formation. This one will take some explaining.

Date: 2005
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DOI: 10.1038/nature03856

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