Subaru Seminars



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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, Kumiko S. Usuda, Naoyuki Tamura, Tomonori Usuda) by email : (please change"_at_" to @).

October 28, Friday, at 11:00 am

" LkCa 15 b: a planet caught during formation using advanced high angular resolution techniques "

Frantz Martinache

(Subaru Telescope)

The young (2 Myr) solar analog LkCa 15 is located in the Taurus-Auriga star forming region, and has since 2005 been known to host a massive circumstellar disk, whose mid-IR spectrum indicates the presence of an inner gap. In 2010, HiCIAO at Subaru observed what has been interpreted as a gap in reflected light in the disk, suggesting that a solar system analog is in the making. Last week was announced the discovery of a likely protoplanet orbiting LkCa 15 well inside the gap using non redundant masking interferometry at the Keck Telescope. I will present this discovery, and discuss what it suggests for the instrumentation development we are currently conducting with the SCExAO upgrade of HiCIAO, leading to the following prediction: the direct observation of forming planets in young associations, often presented as one of the major science themes for the second generation instrumentation of an extremely large telescope (ELT) like TMT, will actually be covered before ELTs are built, using modern high angular resolution techniques on a telescope like Subaru.

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

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