Images of a fourth planet orbiting HR 8799

Christian Marois (), B. Zuckerman, Quinn M. Konopacky, Bruce Macintosh and Travis Barman
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Christian Marois: National Research Council Canada, Herzberg Institute of Astrophysics
B. Zuckerman: University of California
Quinn M. Konopacky: Lawrence Livermore National Laboratory
Bruce Macintosh: Lawrence Livermore National Laboratory
Travis Barman: Lowell Observatory

Nature, 2010, vol. 468, issue 7327, 1080-1083

Abstract: Exoplanets: then there were four A fourth planet has been discovered orbiting the nearby star HR 8799. Three giant planets had been imaged directly in the near-infrared — thanks to their wide orbits and brightness. The fourth is interior to and about the same mass as the other three. The system, with this additional planet, represents a challenge for current planet formation models, as none of them can explain the in situ formation of all four planets.

Date: 2010
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DOI: 10.1038/nature09684

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