论文标题
统一的灾难变量演变的模型
A unified model for the evolution of cataclysmic variables
论文作者
论文摘要
我们给出了剑桥恒星进化代码（星星）中使用的状态分析方程的更新版本，作为一种免费使用开源软件包，我们用来使用该软件包来模拟冷却白矮人的温度$ \ log_ {10}（t_ \ m arterrm {eff}/\ mathrm {eff}/\ mathrm {k} k} k} k}）通过使用双动力学模型，通过在星星代码中进行此更新，我们将灾难变量（CV）恒星的世俗演变建模，其中两个$α-ω$ dynamos之间存在相互作用，一个在对流式信封中，另一个在一个缓慢旋转的辐射辐射核心的边界处，是一个相互作用。我们确认该模型为中断的磁制动范式提供了物理形式主义。此外，我们的模型还提供了一种在周期间隙以下的额外角动量损失的机制。我们使用{Mass}在灾难性变量中的{Mass}分布来构建轨道周期的相对概率分布$ P_ \ MATHRM {ORB} $，并发现我们的模型可以很好地重现CV分布中观察到的周期间隙和观察到的最小峰值。我们还将模型的进化轨迹与其他经验模型的进化轨迹进行了比较，并在两者之间找到一致。我们还报告了我们的建模系统和观察数据之间的良好一致性。
We give an updated version of the analytical equation of state used in the Cambridge stellar evolution code (STARS) as a free to use open-source package that we have used to model cool white dwarfs down to temperatures $\log_{10}(T_\mathrm{eff}/\mathrm{K})\:=\;3$. With this update in the STARS code we model the secular evolution of cataclysmic variable (CV) stars using a double dynamo model wherein there is an interplay between two $α-Ω$ dynamos, one in the convective envelope and the other at the boundary of a slowly rotating shrinking radiative core and the growing convective envelope. We confirm that this model provides a physical formalism for the interrupted magnetic braking paradigm. In addition, our model also provides a mechanism for extra angular momentum loss below the period gap. We construct the relative probability distribution of orbital periods $P_\mathrm{orb}$ using the {mass} distribution of white dwarfs in cataclysmic variables and find that our model excellently reproduces the period gap and the observed period minimum spike in CV distribution. We also compare the evolutionary trajectories from our model with those of other empirical models and find agreement between the two. We also report good agreement between our modelled systems and observational data.
