(Proposal ID) S15B-090 (PI) Kawahara, Hajime (Proposal Title) Subaru Planetary Radial Velocimetry of the Extremely Hot Exoplanet (Abstract) Planetary Radial Velocimetry (PRV) is a novel technique to characterize atmospheric compositions, thermal structure, and spin of exoplanets. The PRV detects signals of molecular lines in planetary dayside spectra with high dispersion instruments (R ~ 100,000) with the aid of the cross correlation method. We propose a Subaru/HDS observation to detect the PRV targeting extremely hot Jupiter, WASP 33b. Its equilibrium temperature (T ~ 3400 K) enables us to gain high planetary flux even in the visible dayside spectra (0.03-0.08 percent) with many suitable water lines (~ 500) in HDS's wide band. The PRV in visible bands is the first attempt in the world and will provide us precious information on chemical compositions including water and Titanium oxide and the atmospheric thermal structure of WASP-33 b. Moreover it provides a first chance to obtain planetary spin around a hot Jupiter.