论文标题
标量调节重力中完全对流恒星的早期演变
Early evolution of fully convective stars in scalar-tensor gravity
论文作者
论文摘要
在这项工作中，低质量完全对流恒星的早期演变是在重力理论（退化的高阶标量调整）理论的背景下进行的。尽管众所周知，静水平衡方程是针对标量调节重力的，但在此框架中未探索对恒星早期进化阶段的修改。考虑到这一点，我们考虑了三个进化阶段 - 对主要序列，锂燃烧和主要序列的入口的收缩 - 并研究了这些阶段中的每个阶段如何受到理论参数的影响。考虑到这些效果，我们能够证明Hayashi曲目发生了变化，并且恒星的年龄得到了很大修改。
In this work, the early evolution of low-mass fully convective stars is studied in the context of DHOST (degenerate higher order scalar-tensor) theories of gravity. Although it is known that the hydrostatic equilibrium equation is modified for scalar-tensor gravity, the consequent modifications to the early evolution phases of a star were not explored in this framework. With this in mind, we consider three evolutionary phases - contraction to the main sequence, lithium burning and entrance to the main sequence - and investigate how each of these phases is affected by the theory's parameter. Taking these effects into account, we are able to show, among other things, that the Hayashi tracks are shifted and the star's age is considerably modified.
