Masashi Omiya

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We report the detection of five jovian mass planets orbiting high metallicity stars. Four of these stars were first observed as part of the N2K program and exhibited low RMS velocity scatter after three consecutive observations. However, follow-up observations over the last three years now reveal the presence of Based on observations obtained at the W. M.(More)
We report the detection of five Jovian mass planets orbiting high metallicity stars. Four of these stars were first observed as part of the N2K program and exhibited low RMS velocity scatter after three consecutive observations. However, follow-up observations over the last three years now reveal the presence of Based on observations obtained at the W. M.(More)
We report the detection of a substellar companion orbiting the intermediatemass giant star 11 Com (G8 III). Precise Doppler measurements of the star from Xinglong station and Okayama Astrophysical Observatory (OAO) revealed Keplerian velocity variations with an orbital period of 326.03±0.32 days, a semiamplitude of 302.8±2.6 m s, and an eccentricity of(More)
We detected a brown dwarf-mass companion around the intermediate-mass giant star HD 119445 (G6III) using the Doppler technique. This discovery is the first result from a Korean−Japanese planet search program based on precise radial velocity measurements. The radial velocity of this star exhibits a periodic Keplerian variation with a period, semi-amplitude(More)
We report the detection of a substellar companion orbiting the G5 dwarf HD 16760 from the N2K sample. Precise Doppler measurements of the star from Subaru and Keck revealed a Keplerian velocity variation with a period of 466.47±0.35 d, a semiamplitude of 407.71±0.84 m s, and an eccentricity of 0.084±0.003. Adopting a stellar mass of 0.78±0.05M⊙, we obtain a(More)
We report the detection of 3 new extrasolar planets from the precise Doppler survey of G and K giants at Okayama Astrophysical Observatory. The host stars, namely, 18 Del (G6 III), ξ Aql (K0 III) and HD 81688 (K0 III–IV), are located at the clump region on the HR diagram with estimated masses of 2.1− 2.3M⊙. 18 Del b has a minimum mass of 10.3MJ and resides(More)