Polarimetry of extra-solar planets and circumstellar disks with ZIMPOL / SPHERE

Details Polarimetry of extra-solar planets and circumstellar disks with ZIMPOL / SPHERE Polarimetry of extra-solar planets and circumstellar disks with ZIMPOL / SPHERE

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010lyot.confe..49h&link_type=abstract

Proceedings of the conference In the Spirit of Lyot 2010: Direct Detection of Exoplanets and Circumstellar Disks. October 25 -

Computer Science

Performance

Scientific paper

The future SPHERE VLT planet finder instrument includes a high precision polarimeter (ZIMPOL) for the search and characterization of reflected and therefore polarized light from extra-solar planetary systems. We discuss first the expected polarization properties of extra-solar planets and circumstellar disks and the diagnostic potential of polarimetric observations. Then we describe what can be achieved by combining in SPHERE / VLT an 8m telescope, an extreme AO system, coronagraphy, and high precision polarimetry. Performance simulations show that a contrast of 10e-8 should be reachable with this instrument. With this sensitivity giant planets around the nearest stars could be detected in reflected light and the structure from many circumstellar disk can be mapped with a spatial resolution of up to 15 milli-arcsec.

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