论文标题

新兴的普通超人作为WZ SGE星星的标准蜡烛

Emerging ordinary superhumps as the standard candle for WZ Sge stars

论文作者

Kato, Taichi

论文摘要

在加藤(2015年,Arxiv:1507.07659)中,我建议,当出现普通超人时,幅度可能是WZ SGE恒星的标准蜡烛。使用Gaia EDR3视差,我研究了53个WZ SGE星来检查此建议。分析表明,当出现普通超块状时的绝对大小在很大程度上取决于轨道倾斜,这与光学厚积聚磁盘投影区域的期望是一致的。我表明,这些绝对幅度和对数早期超人的对数幅度之间存在线性关系,这也取决于倾斜度。我确认,当出现普通超级雨的范围何时可以用作WZ SGE恒星的标准蜡烛,尤其是在明显的早期超级雨的幅度时。当出现普通的超块状时,由此产生的中值绝对幅度为$+$ 5.4(平均倾斜度为1雷达)。一些具有多个重新布置的物体是时期弹跳器的良好候选物,尽管大多数相同的对象都遵循关系,但显示出略微淡淡的绝对幅度。利用这种关系,我得出了早期超人类的倾向与振幅之间的经验关系。 I applied the relation to MASTER OT J030227.28$+$191754.5, which was initially considered as a possible optical counterpart of the high-energy neutrino event IceCube-211125A, and concluded that this WZ Sge star was one of the faintest before the outburst and one of the brightest around the optical peak in terms of absolute magnitudes.

In Kato (2015, arXiv:1507.07659), I suggested that the magnitude when ordinary superhumps appear can be a standard candle for WZ Sge stars. Using Gaia EDR3 parallaxes, I studied 53 WZ Sge stars to examine this suggestion. The analysis indicated that the absolute magnitudes when ordinary superhumps appear are strongly dependent on orbital inclinations, which is consistent with what is expected for the projected area for optical thick accretion disks. I showed that there is a linear relation between these absolute magnitudes and logarithmic amplitudes of early superhumps, which are also dependent on the inclinations. I confirmed that the magnitude when ordinary superhumps appear can be used as the standard candle for WZ Sge stars particularly when the amplitude of early superhumps is observationally known. The resultant median absolute magnitude when ordinary superhumps appear was $+$5.4 (for an average inclination of 1 radian). A few objects with multiple rebrightenings, which are good candidates for period bouncers, showed slightly fainter absolute magnitudes, although the majority of the same class of objects follows the relation. Using the relation, I derived an empirical relation between the inclination and the amplitude of early superhumps. I applied the relation to MASTER OT J030227.28$+$191754.5, which was initially considered as a possible optical counterpart of the high-energy neutrino event IceCube-211125A, and concluded that this WZ Sge star was one of the faintest before the outburst and one of the brightest around the optical peak in terms of absolute magnitudes.

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