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arXiv 2007.07373astro-ph.EP
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GJ 3470 c:位于GJ 3470宜居带的类土星系外行星候选者

GJ 3470 c: A Saturn-like Exoplanet Candidate in the Habitable Zone of GJ 3470

Phillip Scott, Bradley Walter, Quanzhi Ye, David Mitchell, Leo Heiland, Xing Gao, Alejandro Palado, Burkhonov Otabek, Jesus Delgado Casal, Colin Hill, Alberto G… 展开作者

Phillip Scott, Bradley Walter, Quanzhi Ye, David Mitchell, Leo Heiland, Xing Gao, Alejandro Palado, Burkhonov Otabek, Jesus Delgado Casal, Colin Hill, Alberto Garcia, Kevin B. Alton, Yenal Ogmen, Vikrant Kumar Agnihotri, Alberto Caballero

摘要:

我们报告发现了一个新的系外行星候选者围绕恒星GJ 3470运行。OKSky天文台总共探测到三次凌日:第一次是在2019年12月23日,第二次是在2020年2月27日,第三次是在2020年5月3日。我们估计平均过境深度为0.84%,持续时间为1小时2分钟。根据这个参数,我们计算出9.2地球半径的半径,这相当于一颗类似土星的系外行星的大小。我们还估计了66天的轨道周期,将系外行星置于宜居带内,接近地球等效辐射的轨道距离。另外还报告了12个不属于GJ 3470 b的潜在凌日。尽管我们的GJ 3470 c候选者仍有待科学界的确认,但这一发现代表了系外行星研究的一个转折点,因为它是通过业余天文学家管理的国际项目发现的第一个候选者。

英文摘要:

We report the discovery of a new exoplanet candidate orbiting the star GJ 3470. A total of three transits were detected by OKSky Observatory: the first one on December 23, 2019, the second one on February 27, 2020, and the third one on May 3, 2020. We estimate an average transit depth of 0.84 percent and duration of 1 hour and 2 minutes. Based on this parameter, we calculate a radius of 9.2 Earth radii, which would correspond to the size of a Saturn-like exoplanet. We also estimate an orbital period of 66 days that places the exoplanet inside the habitable zone, near the orbital distance at Earths equivalent radiation. Another twelve potential transits that do not belong to GJ 3470 b are also reported. Despite our candidate for GJ 3470 c still has to be confirmed by the scientific community, the discovery represents a turning point in exoplanet research for being the first candidate discovered through an international project managed by amateur astronomers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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