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arXiv 2201.02945astro-ph.SR
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短周期激变变星的演变:来自日食模拟和阶段A超级峰方法的启示(带新年礼物)

Evolution of short-period cataclysmic variables: implications from eclipse modeling and stage A superhump method (with New Year's gift)

Taichi Kato

摘要:

2013年,确定了使用A阶段超级峰(生长中的超级峰)确定矮新星质量比的方法。这种方法是一种动力学方法,因为它只依赖于天体力学。它不依赖于实验校准。从那时起,已经有100多个物体通过这种方法进行了测量。在本文中,我提供了一个更新的描述的方法。与被认为是金标准的现代日食模拟方法的结果比较表明,这两种方法吻合得很好,A阶段超级驼峰方法已被证实与现代日食模拟方法一样准确和可靠。前者的研究对象数量是后者的几倍,是研究激变变星终末演化不可缺少的手段。我还指出,其他研究小组过去的研究假设了不正确的分数超峰超额关系,导致在讨论进化时出现偏差。我还导出了一个新的实验关系B阶段的超级驼峰。最小周期附近的演化轨迹表明,角动量损失是引力波辐射的1.9倍。A阶段超级驼峰的测量在很大程度上归功于业余爱好者和专业人士的国际合作。与鸟类学世界的相似之处在于,两者都通过国际观察交流在团结世界方面发挥作用。我描述了这些合作的总结,并描述了我对天文学和鸟类学之间的关系的想法,并展望了如何多学科的工作可以在这些看似遥远的科学领域之间(删节)。

英文摘要:

In 2013, the method of determining mass ratios of dwarf novae using stage A superhumps (growing superhumps) was established. This method is a dynamical one in that it relies only on celestial mechanics. It is not dependent on an experimental calibration. Since then, more than 100 objects have been measured by this method. In this paper, I provide an updated description of the method. Comparisons with the results of the modern eclipse modeling method, which is considered to be the golden standard, have shown that these two methods agree very well and the stage A superhump method has been confirmed to be as accurate and as reliable as the modern eclipse modeling method. The number of the object by the former methods is now a few time those by the latter method, and the former is indispensable to study the terminal evolution of cataclysmic variables. I also showed that past studies by the other groups assumed incorrect fractional superhump excess relations, causing biases in discussing the evolution. I also derived a new experimental relation for stage B superhumps. The updated evolutionary track around the period minimum suggests that the angular momentum loss is 1.9 times larger than expected by gravitational wave radiation. The measurements of stage A superhumps greatly owe to international collaborations with amateurs and professionals. There is similarity with the world of ornithology in that both play a role in uniting the world via international exchanges of observations. I describe a summary of these collaborations and describe my thoughts about the relation between astronomy and ornithology, and give prospects how multidisciplinary works can be made possible between these seemingly distant fields of science (abridged).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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