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Remote sensing of life: polarimetric signatures of photosynthetic pigments as sensitive biomarkers

  • Svetlana V. Berdyugina (a1) (a2), Jeff R. Kuhn (a3), David M. Harrington (a1) (a3), Tina Šantl-Temkiv (a4) and E. John Messersmith (a3)...

We develop a polarimetry-based remote-sensing method for detecting and identifying life forms in distant worlds and distinguishing them from non-biological species. To achieve this we have designed and built a bio-polarimetric laboratory experiment BioPol for measuring optical polarized spectra of various biological and non-biological samples. Here we focus on biological pigments, which are common in plants and bacteria that employ them either for photosynthesis or for protection against reactive oxygen species. Photosynthesis, which provides organisms with the ability to use light as a source of energy, emerged early in the evolution of life on Earth. The ability to harvest such a significant energy resource could likely also develop on habited exoplanets. Thus, we investigate the detectability of biomolecules that can capture photons of particular wavelengths and contribute to storing their energy in chemical bonds. We have carried out laboratory spectropolarimetric measurements of a representative sample of plants containing various amounts of pigments such as chlorophyll, carotenoids and others. We have also measured a variety of non-biological samples (sands, rocks). Using our lab measurements, we have modelled intensity and polarized spectra of Earth-like planets having different surface coverage by photosynthetic organisms, deserted land and ocean, as well as clouds. Our results demonstrate that linearly polarized spectra provide very sensitive and rather unambiguous detection of photosynthetic pigments of various kinds. Our work paves the path towards analogous measurements of microorganisms and remote sensing of microbial ecology on the Earth and of extraterrestrial life on other planets and moons.

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S.V. Berdyugina , A.V. Berdyugin , D.M. Fluri & V. Piirola (2008). First detection of polarized scattered light from an exoplanetary atmosphere. Astrophys. J. Lett. 673, L83L86.

S.V. Berdyugina , A.V. Berdyugin , D.M. Fluri & V. Piirola (2011). Polarized reflected light from the exoplanet HD189733b: First multicolor observations and confirmation of detection. Astrophys. J. Lett. 728, L6L10.

E. Blankenship & H. Hartman (1998). The origin and evolution of oxygenic photosynthesis. Trends Biochem. Sci. 23, 9497.

T. Brakke (1994). Specular and diffuse components of radiation scattered by leaves. Agricult. Forest Meteorol. 71, 283295.

F.-M. Breon , D. Tanre , P. Lecomte & M. Herman (1995). Polarized reflectance of bare soils and vegetation: measurements and models. IEEE Trans. Geos. Remote Sens. 33, 487499.

B.-O. Demory , S. Seager , N. Madhusudhan , H. Kjeldsen , J. Christensen-Dalsgaard , M. Gillon , J.F. Rowe , W.F. Welsh , E.R. Adams , A. Dupree , D. McCarthy , C. Kulesa , W.J. Borucki & D.G. Koch (2011). The high albedo of the hot Jupiter Kepler-7 b. Astrophys. J. Lett 735, id. L12, 6pp.

D.J. Des Marais , M.O. Harwit , K.W. Jucks , J.F. Kasting , D.N.C. Lin , J.I. Lunine , J. Schneider , S. Seager , W.A. Traub & N.J. Woolf (2002). Remote sensing of planetary properties and biosignatures on extrasolar terrestrial planets. Astrobiology 2(2), 153181.

J.H. Hough , P.W. Lucas , J.A. Bailey , M. Tamura , E. Hirst , D. Harrison & M. Bartholomew-Biggs (2006). PlanetPol: a very high sensitivity polarimeter. PASP 118, 13021318.

N.Y. Kiang , A. Segura , G. Tinetti , Govindjee , R.E. Blankenship , M. Cohen , J. Siefert , D. Crisp & V.S. Measows (2007b). Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds. Astrobiology 7, 252274.

J. Peltoniemi , T. Hakala , J. Suomalainen & E. Puttonen (2009). Polarised bidirectional reflectance factor measurements from soil, stones, and snow. J. Quant. Spectrosc. Radiat. Transfer 110, 19401953.

M.D. Perrin , G. Duchene , Millar-Blanchaer M.P. Fitzgerald , J.R. Graham , S.J. Wiktorowicz , P.G. Kalas , B. Macintosh , B. Bauman , A. Cardwell , J. Chilcote , R.J. De Rosa , D. Dillon , R. Doyon , J. Dunn , D. Erikson , D. Gavel , S. Goodsell , M. Hartung , P. Hibon , P. Ingraham , D. Kerley , Q. Konapacky , J.E. Larkin , J. Maire , F. Marchis , Ch. Marois , T. Mittal , K.M. Morzinski , B.R. Oppenheimer , D.W. Palmer , J. Patience , L. Poyneer , L. Pueyo , F.T. Rantakyrö , N. Sadakuni , L. Saddlemyer , D. Savransky , R. Soummer , A. Sivaramakrishnan , I. Song , S. Thomas , J.K. Wallace , J.J. Wang & S.G. Wolff (2015). Polarimetry with the Gemini planet imager: methods, performance at first light, and the circumstellar ring around HR 4796A. Astrophys. J. 799, id. 182, 26 pp.

P.N. Raven , D.L. Jordan & C.E. Smith (2002). Polarized directional reflectance from laurel and mullein leaves. Opt. Eng. 41, 10021012.

G.D. Scholes , G.R. Fleming , A. Olaya-Castro & R. van Grondelle (2011). Lessons learned from nature about solar light harvesting. Nature Chem. 3, 763774

W.B. Sparks , J.H. Hough , L. Kolokolova , T.A. Germer , F. Chen , S. DasSarma , P. DasSarma , F.T. Robb , N. Manset , I.N. Reid , F.D. Macchetto & W. Martin (2009). Circular polarization in scattered light as a possible biomarker. J. Quant. Spectrosc. Radiat. Transfer 110, 17711779.

V.V. Sridhar , R.P. Singh , A. Mahtab & R. Ghosh (2005). Crop polarisation behavior derived from multi-temporal ADEOS-POLDER data. J. Indian Soc. Remote Sens. 33, 339344.

D.M. Stam (2008). Spectropolarimetric signatures of Earth-like extrasolar planets. Astron. Astropys. 482, 9891007.

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International Journal of Astrobiology
  • ISSN: 1473-5504
  • EISSN: 1475-3006
  • URL: /core/journals/international-journal-of-astrobiology
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