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| DOI | 10.1126/science.aaz0795 |
| A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887 | |
| Jeffers S.V.; Dreizler S.; Barnes J.R.; Haswell C.A.; Nelson R.P.; Rodríguez E.; López-González M.J.; Morales N.; Luque R.; Zechmeister M.; Vogt S.S.; Jenkins J.S.; Palle E.; Berdi Ñas Z.M.; Coleman G.A.L.; Díaz M.R.; Ribas I.; Jones H.R.A.; Butler R.P.; Tinney C.G.; Bailey J.; Carter B.D.; O'Toole S.; Wittenmyer R.A.; Crane J.D.; Feng F.; Shectman S.A.; Teske J.; Reiners A.; Amado P.J.; Anglada-Escudé G. | |
| 发表日期 | 2020 |
| ISSN | 10959203 |
| 起始页码 | 1477 |
| 结束页码 | 1481 |
| 卷号 | 368期号:6498 |
| 英文摘要 | The closet exoplanets to the Sun provide opportunities for detailed characterization of planets outside the Solar System. We report the discovery, using radial velocity measurements, of a compact multiplanet system of super-Earth exoplanets orbiting the nearby red dwarf star GJ 887. The two planets have orbital periods of 9.3 and 21.8 days. Assuming an Earth-like albedo, the equilibrium temperature of the 21.8-day planet is ~350 kelvin. The planets are interior to, but close to the inner edge of, the liquid-water habitable zone. We also detect an unconfirmed signal with a period of ~50 days, which could correspond to a third super-Earth in a more temperate orbit. Our observations show that GJ 887 has photometric variability below 500 parts per million, which is unusually quiet for a red dwarf. Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. |
| 语种 | 英语 |
| 来源机构 | Science (New York, N.Y.) |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133396 |
| 推荐引用方式 GB/T 7714 | Jeffers S.V.,Dreizler S.,Barnes J.R.,et al. A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887[J]. Science (New York, N.Y.),2020,368(6498). |
| APA | Jeffers S.V..,Dreizler S..,Barnes J.R..,Haswell C.A..,Nelson R.P..,...&Anglada-Escudé G..(2020).A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887.,368(6498). |
| MLA | Jeffers S.V.,et al."A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887".368.6498(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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