论文标题
次纳水世界上的失控温室
The runaway greenhouse on subNeptune waterworlds
论文作者
论文摘要
水蒸气失控的温室现象对富含水的亚植物的含义。特别是，解决了具有极高水库的行星的跑步后平衡过程的性质。越过从子跑步到超级跑步条件的阈值导致从具有冷液体海洋和深层内部冰X相的平衡状态过渡到具有热临界液体内部的状态。给定质量有相应的半径膨胀，类似于陆地行星早期提到的失控的温室半径膨胀效应，但在目前的情况下，通货膨胀涉及行星的整个内部。该计算采用状态数据库的水上方程来简化内部结构计算。提供了一些有关$ \ mathrm {h_2} $混合物，硅酸盐核心和热启动进化轨迹的效果的猜测。讨论了观察性的含义，尽管搜索所考虑现象的质量拉迪乌斯特征的搜索受归化性和缺乏数据的限制。
The implications of the water vapor runaway greenhouse phenomenon for water-rich subNeptunes are developed. In particular, the nature of the post-runaway equilibration process for planets that have an extremely high water inventory is addressed. Crossing the threshold from sub-runaway to super-runaway conditions leads to a transition from equilibrated states with cold deep liquid oceans and deep interior ice-X phases to states with hot supercritical fluid interiors. There is a corresponding marked inflation of radius for a given mass, similar to the runaway greenhouse radius inflation effect noted earlier for terrestrial planets, but in the present case the inflation involves the entire interior of the planet. The calculation employs the AQUA equation of state database to simplify the internal structure calculation. Some speculations concerning the effect of $\mathrm{H_2}$ admixture, silicate cores and hot vs. cold start evolution trajectories are offered. Observational implications are discussed, though the search for the mass-radius signature of the phenomena considered is limited by degeneracies and by lack of data.
