A Possible Aeronomy of Extrasolar Terrestrial Planets
A Possible Aeronomy of Extrasolar Terrestrial Planets
复制标题
太阳系外类地行星的可能的天文学
DOI：
10.1029/130gm25
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
K. Jucks
中科院分区：
文献类型：
--
作者：
W. Traub;K. Jucks
类地行星系统可能存在于附近的恒星周围，就像地球大小的行星一样，在太阳附近已经发现了许多巨大的行星。在本章中，我们首先讨论已被建议用于寻找系外类地行星的许多技术。然后，我们将重点放在该技术的预期结果上，该技术使用轨道望远镜或干涉仪来获得行星的可见或红外光谱，而不会受到母星的污染。我们展示了这些光谱的例子：现在的地球，新元古代（雪球）地球，富含甲烷的地球，以及现在的火星和金星。最后，我们讨论了这种光谱对探测系外类地行星上的生命的意义。
Terrestrial planetary systems may exist around nearby stars as the Earthsized counterparts to the many giant planets already discovered within the solar neighborhood. In this chapter we first discuss the numerous techniques which have been suggested to search for extrasolar terrestrial planets. We then focus on the expected results from that technique in which an orbiting telescope or interferometer is used to obtain a visible or infrared spectrum of a planet, without contamination from the parent star. We show examples of such spectra for selected cases: the present Earth, the Neoproterozoic (snowball) Earth, a methane-rich Earth, and the present Mars and Venus. We conclude by discussing the implications of such spectra for the detection of life on an extrasolar terrestrial planet.