标题： 变G的恒星足迹 显示英文标题

标题： Stellar footprints of a variable G

摘要： 具有变化的引力常数$G$的理论早已被研究了很久。 其中，作为标准广义相对论替代方案的最有希望的候选者被称为标量-张量理论。 它们提供了对观测宇宙的一致描述，并作为几种统一相互作用理论的低能极限出现。 因此，近年来人们对这类理论的天体物理后果的兴趣不断增加。 在本文中，我们评论了两种方法论方法，用于研究在变化的$G$理论中天体物理物体的演化，并给出了我们对玻色子星和白矮星获得的特定结果。 显示英文摘要

摘要： Theories with varying gravitational constant $G$ have been studied since long time ago. Among them, the most promising candidates as alternatives of the standard General Relativity are known as scalar-tensor theories. They provide consistent descriptions of the observed universe and arise as the low energy limit of several pictures of unified interactions. Therefore, an increasing interest on the astrophysical consequences of such theories has been sparked over the last few years. In this essay we comment on two methodological approaches to study evolution of astrophysical objects within a varying-$G$ theory, and the particular results we have obtained for boson and white dwarf stars.