S18B0102abst
S18B0102
Transmission spectroscopy of hot Jupiter exoplanets has quickly become the primary technique used to investigate their atmospheres and gleam information about this new class of planet. Especially, it is important to detect Na and K absorption lines in hot Jupiter whose equilibrium temperature is near to condensation temperature of Na/K because of being able to constrain the temperature on terminator. Our targets, excluding WASP-31b, satisfy this condition. We propose 1) the high-resolution transmission spectroscopy of the transiting hot Jupiter by Subaru HDS, 2) the high-resolution transmission spectroscopy for WASP-31b whose K absorption detected using Hubble Space Telescope but did not detect using Very Large Telescope. Subaru large telescope provides high S/N, and Image Slicer 3 provides high-resolution spectra (R ∼ 165,000). This combination is one of the greatest instruments in the world. Then, it is possible to observe the Na and K lines in the upper atmosphere of these planets. Our observations will bring us the first detection of K absorption lines with high resolution and the temperature constraint of these hot Jupiters’ terminator using both Na and K high-resolution spectra.
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