Deciphering Spectral Fingerprints of Habitable Exoplanets

被引:60
作者
Kaltenegger, Lisa [1 ]
Selsis, Frank [2 ]
Fridlund, Malcolm [3 ]
Lammer, Helmut [4 ]
Beichman, Charles [5 ,6 ]
Danchi, William [7 ]
Eiroa, Carlos [8 ]
Henning, Thomas [9 ]
Herbst, Tom [9 ]
Leger, Alain [10 ]
Liseau, Rene [11 ]
Lunine, Jonathan [12 ]
Paresce, Francesco [13 ]
Penny, Alan [14 ]
Quirrenbach, Andreas [15 ]
Rottgering, Huub [16 ]
Schneider, Jean [17 ]
Stam, Daphne [18 ]
Tinetti, Giovanna [19 ]
White, Glenn J. [14 ,20 ]
机构
[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA
[2] Univ Bordeaux 1, Bordeaux, France
[3] European Space Agcy, European Space Res & Technol Ctr, Res & Sci Support Dept, NL-2200 AG Noordwijk, Netherlands
[4] Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria
[5] CALTECH, NASA, Exoplanet Sci Inst, Pasadena, CA 91125 USA
[6] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA
[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[8] Univ Autonoma Madrid, Madrid, Spain
[9] Max Planck Inst Astron, D-69117 Heidelberg, Germany
[10] Univ Paris Sud, Orsay, France
[11] Chalmers Univ Technol, Dept Radio & Space Sci, Onsala, Sweden
[12] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
[13] Ist Nazl Astrofis, Rome, Italy
[14] CCLRC Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot, Oxon, England
[15] Landessternwarte Heidelberg, Heidelberg, Germany
[16] Leiden Observ, NL-2300 RA Leiden, Netherlands
[17] Observ Paris, Lab Univers & Ses Theories, Meudon, France
[18] SRON, Netherlands Inst Space Res, Utrecht, Netherlands
[19] UCL, Dept Phys & Astron, London, England
[20] Open Univ, Milton Keynes MK7 6AA, Bucks, England
关键词
Habitable planets; Exoplanet search; Biomarkers; Planetary atmospheres; EARTH-LIKE PLANETS; TERRESTRIAL PLANETS; EXTRASOLAR PLANETS; THERMAL EMISSION; RED-EDGE; SEARCH; LIFE; ATMOSPHERES; WATER; MARS;
D O I
10.1089/ast.2009.0381
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We discuss how to read a planet's spectrum to assess its habitability and search for the signatures of a biosphere. After a decade rich in giant exoplanet detections, observation techniques have advanced to a level where we now have the capability to find planets of less than 10 Earth masses (M-Earth) (so-called "super Earths''), which may be habitable. How can we characterize those planets and assess whether they are habitable? This new field of exoplanet search has shown an extraordinary capacity to combine research in astrophysics, chemistry, biology, and geophysics into a new and exciting interdisciplinary approach to understanding our place in the Universe. The results of a first-generation mission will most likely generate an amazing scope of diverse planets that will set planet formation, evolution, and our planet into an overall context.
引用
收藏
页码:89 / 102
页数:14
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