标题： 年轻木星较暗淡：巨行星早期演化的全新模型 显示英文标题

标题： Young Jupiters are Faint: New Models of the Early Evolution of Giant Planets

摘要： 这里我们展示了对一颗2 MJ 行星冷却和收缩的初步计算结果。 这些计算正在扩展到1-10 MJ 范围，与其它已发表的“冷却轨迹”不同的是，它们包含了核心吸积-气体捕获形成场景，这是气态巨行星形成的主流理论。 我们发现，该行星在吸积后的初始固有亮度比之前使用任意初始条件的模型低约3倍。 这些差异会持续几千万年。 年轻的巨型行星本质上比之前认识到的更暗弱。 我们还讨论了大气化学的不确定性以及巨型行星形成时间的长短如何导致从与表格中的模型值比较来推导行星物理属性时面临挑战。 显示英文摘要

摘要： Here we show preliminary calculations of the cooling and contraction of a 2 MJ planet. These calculations, which are being extended to 1-10 MJ, differ from other published "cooling tracks" in that they include a core accretion-gas capture formation scenario, the leading theory for the formation of gas giant planets. We find that the initial post-accretionary intrinsic luminosity of the planet is ~3 times less than previously published models which use arbitrary initial conditions. These differences last a few tens of millions of years. Young giant planets are intrinsically fainter than has been previously appreciated. We also discuss how uncertainties in atmospheric chemistry and the duration of the formation time of giant planets lead to challenges in deriving planetary physical properties from comparison with tabulated model values.