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Subaru Seminars are
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you would like to
give a seminar, please contact Subaru seminar organizers
(Thayne Currie, Tae-Soo Pyo, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
February 14, Tuesday, 11 am in 104
" Young Planet-Mass Objects in Taurus "
Po-Shih Chiang
(NCU-Taiwan)
We present the recent results of our W-band survey with CFHT/WIRCam. Substellar
candidates were selected with the reddening-insensitive index 'Q', which is
derived from J-, H-, and W-band photometry. We tested the Q index with a
sample of substellar objects and stars in IC348 and Taurus and found the
accuracy to be better than 75%. Using the Q index alone, two new L-type
objects in Serpens have been confirmed in spectroscopic followup this July.
More candidates in Taurus are going to be observed with IRTF follow up in the
end of December. The spectra of observed candidates will also be presented in
this talk.