Biology
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p14c..07s&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P14C-07
Biology
[0394] Atmospheric Composition And Structure / Instruments And Techniques, [5210] Planetary Sciences: Astrobiology / Planetary Atmospheres, Clouds, And Hazes, [6296] Planetary Sciences: Solar System Objects / Extra-Solar Planets, [6297] Planetary Sciences: Solar System Objects / Instruments And Techniques
Scientific paper
Reflected light off exoplanets is generally linearly polarized. This offers a unique possibility to distinguish this light from the halo of unpolarized starlight, which is many orders of magnitude brighter. Polarimetry is therefore a powerful method that enables direct imaging of exoplanets. Moreover, the spectral dependence of the degree of polarization of the reflected starlight contains unambiguous information on the exoplanetary atmosphere and surface. Polarimetry is therefore also a very promising future technique for exoplanet characterization. This contribution reviews polarimetric instrumentation at current 4-10 m ground-based telescopes that is particularly suited for exoplanet research. Furthermore, it provides an outlook for exoplanet polarimetry with 30-40 m extremely large telescopes.
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