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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tadayuki Kodama, Nagayoshi Ohashi, Tomonori Usuda) by email : (please change"_at_" to @).

Dec 7, Friday, at 11:00 am

" New optical tricks to find and study habitable Exoplanets "

Olivier Guyon

(Subaru Telescope)

Astronomers now understand that exoplanets are abundant, and most stars may have planets. The most interesting exoplanets - the ones that are potentially habitable - are unfortunately very challenging to observe, and require optical systems that are radically different from conventional imaging telescopes. Over the last decade, I have been working with astronomers and optical physicists to develop and test such systems for both ground-based and space-based telescopes. I will describe how such systems work, and highlight a few major recent advances I have been involved in. I will illustrate the strong synergy between efforts in laboratories (mostly in support of future space telescopes) and the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) project on the Subaru telescope. I will show that much progress has been accomplished in the last few years, and that we can now foresee two short term strategies to image and study other habitable worlds: (1) a medium-size (~2 to 4-m diameter) space telescope equipped with a high performance coronagraph can image Earth-like planets around nearby Sun-like stars; (2) an extremely large telescope (ELT) can image habitable planets around nearby low luminosity (M-type) stars.

Seminars are also held at JAC, CFHT, and IfA.

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