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穿越环二进制行星开普勒-34b和开普勒-35b
William F Welsh1, Jerome A Orosz, Joshua A Carter
1Astronomy Department, San Diego State University, 5500 Campanile Drive, San Diego, California 92182, USA. wfw@sciences.sdsu.edu
Nature
|January 13, 2012
概括
已经发现了两个新的环双星行星,Kepler-34b和Kepler-35b,它们围绕一对恒星运行. 这表明,超过1%的二进制恒星拥有巨行星,这表明我们银河系中有数百万颗这样的行星.
科学领域:
- 天文学和天体物理学
- 外系行星科学 外系行星科学
背景情况:
- 大多数类似太阳的恒星存在于二进制星系中.
- 围绕两个恒星运行的二进制行星被理论化,但在开普勒-16b之前缺乏明确的证据.
研究的目的:
- 确认存在并研究额外的环双星行星的属性.
- 为了估计环双星行星的流行率和银河系人口.
主要方法:
- 利用开普勒太空望远镜的运输光度数据.
- 分析光线曲线以检测行星在宿主双星前面经过.
主要成果:
- 发现了两个经过的环双星行星:开普勒-34 b和开普勒-35 b.
- 两者都是低密度的气体巨星,它们的轨道与宿主恒星接近共平面.
- 开普勒-34b在289天内绕其恒星运行;开普勒-35b在131天内绕其恒星运行.
结论:
- 这一发现意味着近距离的二进制恒星中,有超过1%的恒星在共平面轨道上拥有巨行星.
- 这表明银河系中至少有数百万个环双星行星.
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