arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.15529astro-ph.IMastro-ph.EP
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利用调零干涉仪和单模光纤光谱仪的系外行星科学

Exoplanets Sciences with Nulling Interferometers and a Single-Mode Fiber-Fed Spectrograph

Ji Wang, Colby Jurgenson

摘要:

了解系外行星的大气层是破译其形成历史和潜在可居住性的里程碑。对系外行星进行高对比度成像和光谱分析是实现这一目标的主要途径。对系外行星的直接成像需要很高的空间分辨率。干涉测量已被证明是提高空间分辨率的有效方法。然而,很少探索将干涉测量、高对比度成像和高分辨率光谱学相结合的方法。为了填补这一空白,我们提出了用于当前一代8-10米望远镜的双孔径光纤零陷器(FN),它提供了必要的空间和光谱分辨率,以(1)对已知系外行星进行后续光谱分析;(2)检测碎片盘系统中的行星。将FN馈送到高分辨率摄谱仪的概念也可用于未来的空间和地面任务。我们提出了一个案例研究,使用双孔径FN在M恒星周围的岩石行星中寻找生物特征,为未来的空间干涉测量任务。此外,我们讨论了如何FN可以配备在未来的超大型望远镜,以巨麦哲伦望远镜(GMT)为例。

英文摘要:

Understanding the atmospheres of exoplanets is a milestone to decipher their formation history and potential habitability. High-contrast imaging and spectroscopy of exoplanets is the major pathway towards the goal. Directly imaging of an exoplanet requires high spatial resolution. Interferometry has proven to be an effective way of improving spatial resolution. However, means of combining interferometry, high-contrast imaging, and high-resolution spectroscopy have been rarely explored. To fill in the gap, we present the dual-aperture fiber nuller (FN) for current-generation 8-10 meter telescopes, which provides the necessary spatial and spectral resolution to (1) conduct follow-up spectroscopy of known exoplanets; and (2) detect planets in debris-disk systems. The concept of feeding a FN to a high-resolution spectrograph can also be used for future space and ground-based missions. We present a case study of using the dual-aperture FN to search for biosignatures in rocky planets around M stars for a future space interferometry mission. Moreover, we discuss how a FN can be equipped on future extremely large telescopes by using the Giant Magellan Telescope (GMT) as an example.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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