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Proceedings Paper

Potential exoplanet pseudo-biosignatures
Author(s): Gregory Konesky
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Paper Abstract

Over 500 exoplanets have been discovered so far, some being rocky, terrestrial planets. Advancing instrumentation permits spectroscopic examination of their atmospheres, and remote detection of potential of biogenic gases. Of particular interest are oxygen and methane, although other gases are considered. Short residence time of these gases implies continued renewal. Abiotic sources are considered at levels that could be misinterpreted as a pseudobiosignature. Photodissociation of water molecules, for example, could produce an oxygen pseudo-biosignature, although generally at low levels. However, large-scale water loss events, as are thought to have occurred on Venus and Mars, could produce a substantial pseudo-biosignature.

Paper Details

Date Published: 23 September 2011
PDF: 7 pages
Proc. SPIE 8152, Instruments, Methods, and Missions for Astrobiology XIV, 815209 (23 September 2011); doi: 10.1117/12.892210
Show Author Affiliations
Gregory Konesky, K-Plasma, Ltd. (United States)


Published in SPIE Proceedings Vol. 8152:
Instruments, Methods, and Missions for Astrobiology XIV
Richard B. Hoover; Paul C. W. Davies; Gilbert V. Levin; Alexei Yu. Rozanov, Editor(s)

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