Hiroki Harakawa
Tokyo Institute of Technology
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Hiroki Harakawa.
Publications of the Astronomical Society of Japan | 2011
Norio Narita; Teruyuki Hirano; Bun’ei Sato; Hiroki Harakawa; A. Fukui; Wako Aoki; Motohide Tamura
We present precise radial velocities of XO-2 taken with the Subaru HDS, covering two transits of XO-2b with an interval of nearly two years. The data suggest that the orbital eccentricity of XO-2b is consistent with zero within 2
Proceedings of SPIE | 2012
Motohide Tamura; H. Suto; Jun Nishikawa; Takayuki Kotani; Bun’ei Sato; Wako Aoki; Tomonori Usuda; Takashi Kurokawa; Ken Kashiwagi; Shogo Nishiyama; Yuji Ikeda; D. Hall; Klaus W. Hodapp; Jun Hashimoto; J.-I. Morino; Sadahiro Inoue; Yosuke Mizuno; Yo Washizaki; Yoichi Tanaka; Shota Suzuki; Jungmi Kwon; Takuya Suenaga; Dehyun Oh; Norio Narita; Eiichiro Kokubo; Yutaka Hayano; Hideyuki Izumiura; Eiji Kambe; Tomoyuki Kudo; Nobuhiko Kusakabe
\sigma
Publications of the Astronomical Society of Japan | 2012
Bun’ei Sato; Masashi Omiya; Hiroki Harakawa; Hideyuki Izumiura; Eiji Kambe; Yoichi Takeda; Michitoshi Yoshida; Yoichi Itoh; Hiroyasu Ando; Eiichiro Kokubo; Shigeru Ida
(
Publications of the Astronomical Society of Japan | 2010
Bun’ei Sato; Masashi Omiya; Y. Liu; Hiroki Harakawa; Hideyuki Izumiura; Eiji Kambe; Eri Toyota; Daisuke Murata; Byeong-Cheol Lee; Seiji Masuda; Yoichi Takeda; Michitoshi Yoshida; Yoichi Itoh; Hiroyasu Ando; Eiichiro Kokubo; Shigeru Ida; Gang Zhao; Inwoo Han
e=0.045\pm0.024
Proceedings of SPIE | 2014
Takayuki Kotani; Motohide Tamura; Hiroshi Suto; Jun Nishikawa; Bun’ei Sato; Wako Aoki; Tomonori Usuda; Takashi Kurokawa; Ken Kashiwagi; Shogo Nishiyama; Yuji Ikeda; Donald N. B. Hall; Klaus W. Hodapp; Jun Hashimoto; Jun Ichi Morino; Yasushi Okuyama; Yosuke Tanaka; Shota Suzuki; Sadahiro Inoue; Jungmi Kwon; Takuya Suenaga; Dehyun Oh; Haruka Baba; Norio Narita; Eiichiro Kokubo; Yutaka Hayano; Hideyuki Izumiura; Eiji Kambe; Tomoyuki Kudo; Nobuhiko Kusakabe
) and the orbit of XO-2b is prograde (the sky-projected spin-orbit alignment angle
The Astrophysical Journal | 2009
Bun’ei Sato; Debra A. Fischer; Shigeru Ida; Hiroki Harakawa; Masashi Omiya; John Asher Johnson; Geoffrey W. Marcy; Eri Toyota; Yasunori Hori; Howard Isaacson; Andrew W. Howard; Kathryn M. G. Peek
\lambda=10^{\circ}\pm72^{\circ}
The Astrophysical Journal | 2015
Teruyuki Hirano; Kento Masuda; Bun’ei Sato; O. Benomar; Yoichi Takeda; Masashi Omiya; Hiroki Harakawa; Atsushi Kobayashi
). The poor constraint of
The Astrophysical Journal | 2015
Bun’ei Sato; Teruyuki Hirano; Masashi Omiya; Hiroki Harakawa; Atsushi Kobayashi; Ryo Hasegawa; Takuya Takarada; Kiyoe Kawauchi; Kento Masuda
\lambda
The Astrophysical Journal | 2010
Hiroki Harakawa; Bun’ei Sato; Debra A. Fischer; Shigeru Ida; Masashi Omiya; John Asher Johnson; Geoffrey W. Marcy; Eri Toyota; Yasunori Hori; Andrew W. Howard
is due to a small impact parameter (the orbital inclination of XO-2b is almost 90
Publications of the Astronomical Society of Japan | 2013
Bun’ei Sato; Masashi Omiya; Hiroki Harakawa; Y. Liu; Hideyuki Izumiura; Eiji Kambe; Yoichi Takeda; Michitoshi Yoshida; Yoichi Itoh; Hiroyasu Ando; Eiichiro Kokubo; Shigeru Ida
^{\circ}
Collaboration
Dive into the Hiroki Harakawa's collaboration.
