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arXiv 0910.5355astro-ph.IMastro-ph.SR
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用于类彗星行星地面成像的高对比度日冕仪

High-contrast coronagraph for ground-based imaging of Jupiter-like planets

Jiangpei Dou, Deqing Ren, Yongtian Zhu

摘要:

我们提出了一个高对比度的日冕直接成像的年轻的类星体行星绕附近明亮的恒星。日冕仪采用了一个阶梯透射滤波器,其中的强度是变迹与一个有限数量的步骤相同的传输在每一步。它应该安装在一个大型地面望远镜上,配备最先进的自适应光学系统。在这种情况下,在距离中心恒星0.1弧秒的范围内,应该可以达到10^-6左右的对比度。近年来,一种具有圆形变迹滤波器的日冕仪正在研制中,它可用于具有中心遮挡和蜘蛛结构的地基望远镜。它表明,地基直接成像的类木星行星是有前途的与目前的技术。

英文摘要:

We propose a high-contrast coronagraph for direct imaging of young Jupiter-like planets orbiting nearby bright stars. The coronagraph employs a step-transmission filter in which the intensity is apodized with a finite number of steps of identical transmission in each step. It should be installed on a large ground-based telescope equipped with state-of-the-art adaptive optics systems. In that case, contrast ratios around 10^-6 should be accessible within 0.1 arc seconds of the central star. In recent progress, a coronagraph with circular apodizing filter has been developing, which can be used for a ground-based telescope with central obstruction and spider structure. It is shown that ground-based direct imaging of Jupiter-like planets is promising with current technology.

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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