超峰是AM CVn系统质量比的良好度量吗？
Are Superhumps Good Measures of the Mass Ratio for AM CVn Systems?
摘要：
我们最近的工作，包括压力的影响，推导出的进动率的偏心吸积盘激变变量的情况下，双退化系统。我们发现，在这样的系统中的压力的逻辑缩放的结果在不切实际的高初级质量的预测。使用原型AM CVn作为效应大小的校准器，我们发现没有一致适用于该类中所有系统的缩放。我们讨论的原因缺乏一个超级驼峰周期的质量比的关系类似于已知的SU UMa系统，并建议，这是因为这些secondaries没有一个单一的值的质量半径的关系。我们强调的质量比的不可靠性，通过应用SU UMa表达式的AM CVn二进制文件。
英文摘要：
We extend recent work that included the effect of pressure forces to derive the precession rate of eccentric accretion discs in cataclysmic variables to the case of double degenerate systems. We find that the logical scaling of the pressure force in such systems results in predictions of unrealistically high primary masses. Using the prototype AM CVn as a calibrator for the magnitude of the effect, we find that there is no scaling that applies consistently to all the systems in the class. We discuss the reasons for the lack of a superhump period to mass ratio relationship analogous to that known for SU UMa systems and suggest that this is because these secondaries do not have a single valued mass-radius relationship. We highlight the unreliability of mass-ratios derived by applying the SU UMa expression to the AM CVn binaries.
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