Y
Yoichi Takeda
Researcher at National Institutes of Natural Sciences, Japan
Publications - 59
Citations - 2493
Yoichi Takeda is an academic researcher from National Institutes of Natural Sciences, Japan. The author has contributed to research in topics: Radial velocity & Stars. The author has an hindex of 28, co-authored 59 publications receiving 2420 citations. Previous affiliations of Yoichi Takeda include University of Tokyo & Graduate University for Advanced Studies.
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Journal ArticleDOI
A Planetary Companion to the Hyades Giant ∊ Tauri
Bun'ei Sato,Hideyuki Izumiura,Hideyuki Izumiura,Eri Toyota,Eiji Kambe,Yoichi Takeda,Seiji Masuda,Masashi Omiya,Daisuke Murata,Yoichi Itoh,Hiroyasu Ando,Michitoshi Yoshida,Masahiro Ikoma,Eiichiro Kokubo,Shigeru Ida +14 more
TL;DR: This is the first planet ever discovered in an open cluster as mentioned in this paper, which is the most secure upper limit ever on the timescale of giant planet formation in the open cluster setting.
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A Planetary Companion to the G-Type Giant Star HD 104985
B. Sato,Hiroyasu Ando,Eiji Kambe,Yoichi Takeda,Hideyuki Izumiura,Seiji Masuda,Etsuji Watanabe,Kunio Noguchi,S. Wada,Norio Okada,Hisashi Koyano,Hideo Maehara,Yuji Norimoto,Takafumi Okada,Yasuhiro Shimizu,Fumihiro Uraguchi,Kenshi Yanagisawa,Michitoshi Yoshida +17 more
TL;DR: In this article, the detection of a planetary-mass companion to the G9 III giant star HD 104985 from precise Doppler velocity measurements made using the High Dispersion Echelle Spectrograph (HIDES) at Okayama Astrophysical Observatory was reported.
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Spectroscopic Determination of Atmospheric Parameters of Solar-Type Stars: Description of the Method and Application to the Sun
TL;DR: In this paper, a computer program was developed for determining the fundamental model atmosphere parameters (Teff, logg, vt,[ Fe/H]) of solar-type stars, which is based on the equivalent widths for a well-chosen set of Fe I and Fe II lines.
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Development of Iodine Cells for the Subaru HDS and the Okayama HIDES : II. New Software for Precise Radial Velocity Measurements
TL;DR: In this article, a computer code for precise measurements of stellar radial velocity variations with iodine (I2) cells attached to the HDS on Subaru Telescope and the HIgh Dispersion Echelle Spectrograph (HIDES) on Okayama 188cm reflector was developed.
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PLANET-PLANET ECLIPSE AND THE ROSSITER-McLAUGHLIN EFFECT OF A MULTIPLE TRANSITING SYSTEM: JOINT ANALYSIS OF THE SUBARU SPECTROSCOPY AND THE KEPLER PHOTOMETRY
Teruyuki Hirano,Norio Narita,Bun'ei Sato,Yasuhiro H. Takahashi,Kento Masuda,Yoichi Takeda,Wako Aoki,Motohide Tamura,Yasushi Suto,Yasushi Suto +9 more
TL;DR: In this paper, a joint analysis of the Rossiter-McLaughlin (RM) effect with Subaru and the Kepler photometry for the Kepler Object of Interest (KOI) 94 system is reported.