Tadashi NAKAJIMA
(Astrobiology Center/NAOJ)
We have analyzed 400 square degrees of HSC-SSP data in search of brown dwarf candidates. In terms of the survey volume of 8.9 x 10^6 pc^3 for L dwarfs and that for 3.7 x 10^5 pc^3 for T dwarfs, the former is 32 times and the latter is 17 times larger than the previously largest volumes surveyed by the Canada-France Brown Dwarf Survey and UKIDSS respectively. The limiting distance for L dwarfs is 600 pc and that for T dwarfs is 210 pc. These are sufficient to study the vertical scale height in the Galactic thin disk.