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arXiv 1102.3914astro-ph.EP
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行星系HR 8799中10个AU伴星的观测约束

Observational Constraints on Companions inside of 10 AU in the HR 8799 Planetary System

Sasha Hinkley, John M. Carpenter, Michael J. Ireland, Adam L. Kraus

摘要:

我们报告了HR 8799的凯克L '波段非冗余孔径掩蔽的结果,HR 8799是一个有四个已确认的行星质量伴星的系统,预计轨道间隔为14至68 AU。我们利用这些观测结果来限制行星和棕矮星在10个AU内的预计轨道分离处的存在-更传统的直接成像方法无法达到的分离。在0.8到10天文单位的轨道间隔之间,没有发现同伴,置信度超过99%。假设年龄为3000万年,并采用Baraffe模型,我们将80,60和11木星质量的行星质量同伴的上限分别为0.8,1和3 - 10 AU的轨道间距。我们对HR 8799的大质量同伴的限制将有助于澄清正在进行的关于这个多行星系统轨道稳定性的研究,并可能照亮未来致力于了解~6 AU的无尘洞内部的工作。

英文摘要:

We report the results of Keck L'-band non-redundant aperture masking of HR 8799, a system with four confirmed planetary mass companions at projected orbital separations of 14 to 68 AU. We use these observations to place constraints on the presence of planets and brown dwarfs at projected orbital separations inside of 10 AU---separations out of reach to more conventional direct imaging methods. No companions were detected at better than 99% confidence between orbital separations of 0.8 to 10 AU. Assuming an age of 30 Myr and adopting the Baraffe models, we place upper limits to planetary mass companions of 80, 60, and 11 Jupiter Masses at projected orbital separations of 0.8, 1, and 3-10 AU respectively. Our constraints on massive companions to HR 8799 will help clarify ongoing studies of the orbital stability of this multi-planet system, and may illuminate future work dedicated to understanding the dust-free hole interior to ~6 AU.

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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