The first exoplanet discovered around the star was GJ 357 b.
科学家发现的首颗围绕这颗恒星运行的系外行星是GJ 357 b。
The exoplanet is 22% larger and 80% more massive than Earth, making it a super-Earth. The researchers estimate that it has an average temperature of 490 degrees Fahrenheit. It completes one orbit around the star every 3.9 days.
这颗系外行星体积比地球大22%,质量比地球高80%,使之成为“超级地球”。研究人员估计它的平均温度为490华氏度(约合254摄氏度)。这颗行星的公转周期为3.9天。
"We describe GJ 357 b as a 'hot Earth,'" said Enric Pallé, study co-author and astrophysicist at the Institute of Astrophysics of the Canary Islands. "Although it cannot host life, it is noteworthy as the third-nearest transiting exoplanet known to date and one of the best rocky planets we have for measuring the composition of any atmosphere it may possess."
“我们将GJ 357 b描述为一个‘热地球’,”研究的合作者、加那利群岛天体物理研究所的天体物理学家恩里克·怕列说。“尽管它不能承载生命,但值得注意的是,它是迄今为止已知的‘第三近程’过境系外行星,也是可以用来测量其拥有的任何大气成分的最佳岩质行星之一。”
The researchers also discovered more signals of exoplanets in the system.
研究人员还在星系中发现了更多系外行星的信号。
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