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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 @).

Apr 2, Monday, at 11:00 am

" Molecular lines observations of protoplanetary disks "

Edwige Chapillon

(ASIAA, Taiwan)

Understanding the structure and evolution of disks surrounding young low-mass stars is one of the key issues to study the process of planet formation. Nevertheless the overall properties of those disks are not yet well constrained by observations. Observation of molecular lines is a useful tool to constrain the disks physical structure, as different molecules sample different physical conditions.. Beside the abundant CO, several other molecules have been detected in the outer part of the disks in the millimetre domain (e.g. HCO+, H2CO, CS, HCN, CN...). In this talk I will present results obtained with APEX and the IRAM telescopes, and I will confront them to models of protoplanetary disks, in particular to the layered structure that is predicted by all chemical model so far.

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

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