论文标题
高分辨率的高分辨率光谱旋转红色巨型宿主星星
High resolution Spectra of Earth-Like Planets Orbiting Red Giant Host Stars
论文作者
论文摘要
在不久的将来，我们将拥有旨在观察和表征类似地球行星的地面和空间望远镜。尽管注意力集中在绕主要序列恒星绕的系外星际行星上，但已经发现了150多个轨道上的超过150台系外行星，开辟了一个有趣的问题，即在红色巨人的可居住地带中绕着哪些岩石世界绕行，以及如何表征它们。我们在红色巨型宿主的可居住区域中绕着地面温度在地球当量距离的5200至3900 K之间的宜居区域的地球样行星的反射和发射光谱进行建模，并在其整个宿主的演变中进行模型行星光谱。我们提出了从可见光到红外线的红色巨型宜居区中绕行的地球状行星的高分辨率光谱数据库，以评估表征大气特征的可行性，包括这些行星的生物签名，即即将到来的地面和空间望远镜，例如非常大的望远镜和詹姆斯·韦伯（James Webb）空间望远镜。
In the near future we will have ground- and space-based telescopes that are designed to observe and characterize Earth-like planets. While attention is focused on exoplanets orbiting main sequence stars, more than 150 exoplanets have already been detected orbiting red giants, opening the intriguing question of what rocky worlds orbiting in the habitable zone of red giants would be like and how to characterize them. We model reflection and emission spectra of Earth-like planets orbiting in the habitable zone of red giant hosts with surface temperatures between 5200 and 3900 K at the Earth-equivalent distance, as well as model planet spectra throughout the evolution of their hosts. We present a high-resolution spectral database of Earth-like planets orbiting in the red giant habitable zone from the visible to infrared, to assess the feasibility of characterizing atmospheric features including biosignatures for such planets with upcoming ground- and space-based telescopes such as the Extremely Large Telescopes and the James Webb Space Telescope.
