论文标题

前序列二进制DQ Tau中的斑点,耀斑,积聚和遮挡

Spots, flares, accretion, and obscuration in the pre-main sequence binary DQ Tau

论文作者

Kóspál, Á., Ábrahám, P., Zsidi, G., Vida, K., Szabó, R., Moór, A., Pál, A.

论文摘要

DQ Tau是一种年轻的低质量光谱二进制,由两个几乎相等的质量恒星组成,在15.8天的时期,周围环绕着圆盘。我们分析了开普勒K2,Spitzer空间望远镜和地面设施获得的DQ Tau的光曲线。我们观察到可变性现象,包括恒星斑点的旋转调制,能量的恒星耀斑,由于增加的增生而引起的围绕底座周围的亮亮事件以及由于暂时的杂型遮挡而引起的短倾角。关于DQ TAU的研究将有助于发现和理解“类似Tatooine”系统的其他现实世界实例的形成和演变。这尤其重要,因为越来越多的证据表明,所有类似太阳的恒星均出生在二元或多个系统中,这些系统由于动态相互作用而破裂。

DQ Tau is a young low-mass spectroscopic binary, consisting of two almost equal-mass stars on a 15.8 day period surrounded by a circumbinary disk. We analyzed DQ Tau's light curves obtained by Kepler K2, the Spitzer Space Telescope, and ground-based facilities. We observed variability phenomena, including rotational modulation by stellar spots, energetic stellar flares, brightening events around periastron due to increased accretion, and short dips due to temporary circumstellar obscuration. The study on DQ Tau will help in discovering and understanding the formation and evolution of other real-world examples of "Tatooine-like" systems. This is especially important because more and more evidence points to the possibility that all Sun-like stars were born in binary or multiple systems that broke up later due to dynamical interactions.

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