论文标题
旨在了解YSO的可变性:爆发,浸入和对称变化的含有盘式YSOS的多波长分析
Towards an understanding of YSO variability: A multi-wavelength analysis of bursting, dipping, and symmetrically varying light curves of disc-bearing YSOs
论文作者
论文摘要
使用NGC 2264中含有盘的年轻恒星的同时光学和红外光曲线,我们进行了YSO的第一个多波长结构函数研究。我们发现,北极光的变异性幅度比玻璃剂的变异性幅度更大,并且在所有时间尺度上,北极光的变化幅度比几个小时的时间更长。通过分析光含量颜色的时间序列,我们还发现,毛毛的变异性在所有时间尺度上的变异性比其他变异性类型都少。我们提出了一个YSO变异性的模型,其中在低,中间和高倾斜的系统中观察到对称,爆发和浸入行为。我们认为,光盘的相对较短的热时间尺度可以解释以下事实:助力机的红外光曲线比光学对应物更对称。
Using simultaneous optical and infrared light curves of disc-bearing young stars in NGC 2264, we perform the first multi-wavelength structure function study of YSOs. We find that dippers have larger variability amplitudes than bursters and symmetric variables at all timescales longer than a few hours. By analysing optical-infrared colour time-series, we also find that the variability in the bursters is systematically less chromatic at all timescales than the other variability types. We propose a model of YSO variability in which symmetric, bursting, and dipping behaviour is observed in systems viewed at low, intermediate, and high inclinations, respectively. We argue that the relatively short thermal timescale for the disc can explain the fact that the infrared light curves for bursters are more symmetric than their optical counterparts.