Recent developments in astronomical observations enable direct imaging of circumstellar disks. Precise characterization of such extended structure is essential to our understanding of stellar systems. However, the faint intensity of the circumstellar disks compared to the brightness of the host star compels astronomers to use tailored observation strategies, in addition to state-of-the-art optical devices. Even then, extracting the signal of circumstellar disks heavily relies on post-processing techniques. In this work, we propose a morphological component analysis (MCA) approach that leverages low-complexity models of both the disks and the stellar light corrupting the data. In addition to disks, our method allows to image exoplanets. Our approach is tested through numerical experiments.
翻译：天文学观测的最新发展使得能够直接成像环星磁盘。对这种扩展结构的精确定性对于我们对恒星系统的理解至关重要。然而,与主星的亮度相比,环星磁盘的微弱强度迫使天文学家除了使用最先进的光学设备之外,还使用量身定制的观测战略。即使如此,提取环星磁盘信号也在很大程度上依赖于后处理技术。在这项工作中,我们提议一种形态成分分析(MMCA)方法,利用磁盘和恒星光的低兼容性模型来腐蚀数据。除了磁盘之外,我们的方法还允许图像外行星。我们的方法是通过数字实验来测试的。
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