论文标题
高清83443C：一个高度古怪的巨型星球
HD 83443c: A highly eccentric giant planet on a 22-year orbit
论文作者
论文摘要
我们报告发现一个高度偏心的长期jovian行星，绕着热jupiter主机高清\，83443。通过结合来自二十多年来的四种乐器（AAT/UCLES，KECK/HIRES，HARPS，MINERVA-AUSTRALIS）的径向速度数据，我们找到了具有M〜Sin〜 $ i = 1.35^{+0.07} _ {-0.06} $ \ mj的行星的证据，偏心$ e = 0.76 \ pm $ 0.05。我们将径向速度分析与\ textIt {gaia} edr3 /\ textit {hipparcos}相结合，并得出一个动态质量为$ 1.5^{+0.5} _ { - 0.2} m _ {\ rm jup} $。我们执行详细的动力学模拟，该模拟揭示了系统内稳定性的位置，该位置可能藏有其他行星，包括宿主恒星宜居区内的稳定区域。 HD \，83443是托有热木星和外部行星伴侣的系统的罕见示例。高清\，83443c的高偏心率表明，散射事件可能已将热木星送到其近距离轨道，同时将外行星留在宽阔而怪异的路径上。
We report the discovery of a highly eccentric long-period Jovian planet orbiting the hot-Jupiter host HD\,83443. By combining radial velocity data from four instruments (AAT/UCLES, Keck/HIRES, HARPS, Minerva-Australis) spanning more than two decades, we find evidence for a planet with m~sin~$i=1.35^{+0.07}_{-0.06}$\,\mj, moving on an orbit with $a=8.0\pm$0.8\,au and eccentricity $e=0.76\pm$0.05. We combine our radial velocity analysis with \textit{Gaia} eDR3 /\textit{Hipparcos} proper motion anomalies and derive a dynamical mass of $1.5^{+0.5}_{-0.2} M_{\rm Jup}$. We perform a detailed dynamical simulation that reveals locations of stability within the system that may harbor additional planets, including stable regions within the habitable zone of the host star. HD\,83443 is a rare example of a system hosting a hot Jupiter and an exterior planetary companion. The high eccentricity of HD\,83443c suggests that a scattering event may have sent the hot Jupiter to its close orbit while leaving the outer planet on a wide and eccentric path.
