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The variation of biomarkers in the spectrum of Earthshine

Published online by Cambridge University Press:  10 November 2011

Marie-Eve Naud ,
R. Lamontagne  and
F. Wesemael
Marie-Eve Naud
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, Qué. H3C 3J7, Canada email: naud@astro.umontreal.ca, lamont@astro.umontreal.ca, wesemael@astro.umontreal.ca
R. Lamontagne
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, Qué. H3C 3J7, Canada email: naud@astro.umontreal.ca, lamont@astro.umontreal.ca, wesemael@astro.umontreal.ca
F. Wesemael
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, Qué. H3C 3J7, Canada email: naud@astro.umontreal.ca, lamont@astro.umontreal.ca, wesemael@astro.umontreal.ca
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Abstract

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We present preliminary results from a study of the variations of the optical spectrum of the Earthshine over a period of a year. Our goal is to follow, on several timescales, the spectral changes of the signature of various biomarkers that are potential indicators of habitability and/or biological activity, and of the Vegetation Red Edge, a feature around 700 nm due to photosynthetic organisms.

Keywords

Earthplanetary systems

References

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