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Direct imaging of multiple planets orbiting the star HR 8799.(RESEARCH ARTICLES)(Author abstract)(Report)

Marois, Christian ; Macintosh, Bruce ; Barman, Travis ; Zuckerman, B. ; Song, Inseok ; Patience, Jennifer ; Lafreniere, David ; Doyon, Rene

Science, Nov 28, 2008, Vol.322(5906), p.1348(5) [Tạp chí có phản biện]

ISSN: 0036-8075

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  • Nhan đề:
    Direct imaging of multiple planets orbiting the star HR 8799.(RESEARCH ARTICLES)(Author abstract)(Report)
  • Tác giả: Marois, Christian ; Macintosh, Bruce ; Barman, Travis ; Zuckerman, B. ; Song, Inseok ; Patience, Jennifer ; Lafreniere, David ; Doyon, Rene
  • Chủ đề: Extrasolar Planets -- Observations
  • Là 1 phần của: Science, Nov 28, 2008, Vol.322(5906), p.1348(5)
  • Mô tả: Direct imaging of exoplanetary systems is a powerful technique that can reveal Jupiter-like planets in wide orbits, can enable detailed characterization of planetary atmospheres, and is a key step toward imaging Earth-like planets. Imaging detections are challenging because of the combined effect of small angular separation and large luminosity contrast between a planet and its host star. High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units. Multi-epoch data show counter clockwise orbital motion for air three imaged planets. The low luminosity of the companions and the estimated age of the system imply planetary masses between 5 and 13 times that of Jupiter. This system resembles a scaled-up version of the outer portion of our solar system.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0036-8075

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