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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 (Tae-Soo Pyo, Sherry Yeh, Nagayoshi Ohashi) by email : (please change"_at" to @).

May 13, Friday, 3:30 pm in 104

" Searching for z- and Y-dropout QSOs in UKIDSS-UDS and VIKING fields "

Ji-Jia Tang

(National Taiwan University)

One of the goals of the HSC survey is to search for high redshift QSOs. By combining near-infrared (NIR) and mid-infrared surveys with the HSC survey, we aim to search for z>6.7 QSOs. Because the HSC survey at Y is usually much deeper than other wide-area NIR surveys. Taking advantage of this, we tried the followings: We first utilized the deep NIR survey, UKIDSS-UDS (JAB=24.9; 5-sigma) to search for z-dropout sources (detected in HSC-Y in wide layer and longer UKIDSS bands, and not detected in all shorter HSC bands). We then utilized wide-field VIKING survey to search for Y-dropout sources (detected in VIKING-J, H, and K bands, and not detected in HSC-Y in wide layer). In this talk, I will present my results, and compare my result with the bayesian probability used by HSC high-z quasar search team.

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

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