L/T跃迁棕矮星中混光大气的解纠缠
Disentangling the Signatures of Blended-Light Atmospheres in L/T Transition Brown Dwarfs
摘要：
我们提出了一种技术，以确定具有单历元，低分辨率，近红外SpeX光谱光度可变的L7-T3褐矮星。我们计算了已知的变量褐矮星的光谱指数，并使用它们来选择11个指数-指数参数空间，其中已知的变量可以从褐矮星的一般人口的其余部分区分开来。我们发现62个候选变量，其中12个显示出显着的变化幅度在独立的光度监测调查。这种技术构成了第一个正式的方法，以确定一个时间依赖性的影响，如变异的特点，在其集成的光谱。这项技术将是一个有用的工具，优先目标的未来光度和光谱监测的时代，JWST和30米级望远镜。
英文摘要：
We present a technique to identify spectrophotometrically variable L7-T3 brown dwarfs with single-epoch, low-resolution, near-infrared SpeX spectra. We calculated spectral indices on known variable brown dwarfs and used them to select 11 index-index parameter spaces where known variables can be distinguished from the rest of the general population of brown dwarfs. We find 62 candidate variables, 12 of which show significant variability amplitude in independent photometric monitoring surveys. This technique constitutes the first formal method to identify a time-dependent effect such as variability from peculiarities in their integrated light spectra. This technique will be a useful tool to prioritize targets for future photometric and spectroscopic monitoring in the era of JWST and 30m-class telescopes.
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