Rahul Raj (NTHU), Tomotsugu Goto (NTHU), Rieko Momose (University of Tokyo), Tetsuya Hashimoto (NTHU), Seong-Jin Kim (NTHU), Yi-Han WU (NTHU), Tapish Narwal (NTHU), Chia-Ying Chiang (NTHU)
Host galaxies of highest-redshift quasi-stellar objects (QSOs) enable us to investigate the physics relevant to the connection between galaxy and most luminous black hole at the earliest epoch of the Universe. We made a custom narrow band filter, NB906, centered on the Lyman-alpha line at z=6.4. In this work we report the narrow band observations of a luminous QSO at z=6.417 (CFHQS J2329-0301) with Subaru/Suprime-Cam to search for possible spatially extended emission in the Lyman-alpha line. Similar to the work done in Goto.et.al 2009, in this work we have also attempted to fit the narrow-band image with a PSF+Sersic+sky model using the GALFIT, which turned out to be a very good fit within 11 Kpc of radius. Our main goal is to measure the size and radial profile of Lyman-alpha nebulae surrounding the QSO. I will present further results during the conference.