A new family of planets?: "Ocean-Planets"

被引:258
作者
Léger, A
Selsis, F
Sotin, C
Guillot, T
Despois, D
Mawet, D
Ollivier, M
Labèque, A
Valette, C
Brachet, F
Chazelas, B
Lammer, H
机构
[1] Univ Paris 11, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France
[2] Ctr Astrobiol, Madrid 28850, Spain
[3] Univ Nantes, F-44321 Nantes, France
[4] Observ Cote Azur, F-06304 Nice 04, France
[5] Observ Bordeaux, INSU, CNRS, F-33270 Floirac, France
[6] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
关键词
extrasolar planets; ices; Exobiology;
D O I
10.1016/j.icarus.2004.01.001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A new family of planets is considered which is in between the rocky terrestrial planets and the gaseous giants, "Ocean-Planets." We present the possible formation, composition and internal structure of these putative planets. We consider their oceans, as well as their possible Exobiology interest. These exoplanets should be detectable by Space missions such as Eddington, Kepler, and possibly COROT (launch scheduled in 2006). They have a density lower than that of rocky planets. Their rather large radius would make them attractive targets for exoplanet spectroscopic missions such as Darwin/TPF, all the more because a robust biosignature appears to exist. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:499 / 504
页数:6
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