Astrobiology Science and Technology for Exploring Planets (ASTEP)

Seminar Detail

Using Polarization to Detect and Characterize Extrasolar Planets

Presenter: Jeremy Bailey

April 29, 2008 02:30 PM Pacific

Light scattered from planetary surfaces and atmospheres is polarized while the light of the star is unpolarized. The polarization variations around a planet's orbit provide information that is complementary to that obtainable using spectroscopy. I will describe how polarization could be used in the future to search for liquid water on extrasolar terrestrial planets by detecting the rainbow scattering from cloud droplets and the "glint" from surface oceans. Such observations should be feasible with proposed space missions such as the Terrestrial Planet Finder-Coronograph and provide a means of detecting habitable planets. I will also describe a new high-sensitivity polarimeter built to search for the polarized scattered light from Hot Jupiter type exoplanets.

Participation Instructions

With a Polycom....RSVP to Marco Boldt (Marco.Boldt@nasa.gov) and connect to WebEx as instructed below. If you need Polycom help during the live event, message Marco Boldt in WebEx.

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Without a Polycom...There are two ways to participate:

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