KEPLER-1647B: THE LARGEST AND LONGEST-PERIOD KEPLER TRANSITING CIRCUMBINARY PLANET
書誌事項
- 公開日
- 2016-08-10
- 権利情報
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- https://iopscience.iop.org/page/copyright
- https://iopscience.iop.org/info/page/text-and-data-mining
- DOI
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- 10.3847/0004-637x/827/1/86
- 公開者
- American Astronomical Society
この論文をさがす
説明
<jats:title>ABSTRACT</jats:title> <jats:p>We report the discovery of a new <jats:italic>Kepler</jats:italic> transiting circumbinary planet (CBP). This latest addition to the still-small family of CBPs defies the current trend of known short-period planets orbiting near the stability limit of binary stars. Unlike the previous discoveries, the planet revolving around the eclipsing binary system Kepler-1647 has a very long orbital period (∼1100 days) and was at conjunction only twice during the <jats:italic>Kepler</jats:italic> mission lifetime. Due to the singular configuration of the system, Kepler-1647b is not only the longest-period transiting CBP at the time of writing, but also one of the longest-period transiting planets. With a radius of 1.06 ± 0.01 <jats:italic>R</jats:italic> <jats:sub>Jup</jats:sub>, it is also the largest CBP to date. The planet produced three transits in the light curve of Kepler-1647 (one of them during an eclipse, creating a syzygy) and measurably perturbed the times of the stellar eclipses, allowing us to measure its mass, 1.52 ± 0.65 <jats:italic>M</jats:italic> <jats:sub>Jup</jats:sub>. The planet revolves around an 11-day period eclipsing binary consisting of two solar-mass stars on a slightly inclined, mildly eccentric (<jats:italic>e</jats:italic> <jats:sub>bin</jats:sub> = 0.16), spin-synchronized orbit. Despite having an orbital period three times longer than Earth’s, Kepler-1647b is in the conservative habitable zone of the binary star throughout its orbit.</jats:p>
収録刊行物
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- The Astrophysical Journal
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The Astrophysical Journal 827 (1), 86-, 2016-08-10
American Astronomical Society
