Infrared Doppler instrument (IRD) for the Subaru telescope to search for Earth-like planets around nearby M-dwarfs

Takayuki Kotani; Motohide Tamura; Hiroshi Suto; Jun Nishikawa; Bun'ei Sato; Wako Aoki; Tomonori Usuda; Takashi Kurokawa; Ken Kashiwagi; Shogo Nishiyama; Yuji Ikeda; Donald 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; Masahiro Ikoma; Yasunori Hori; Masashi Omiya; Hidenori Genda; Akihiko Fukui; Yuka Fujii; Olivier Guyon; Hiroki Harakawa; Masahiko Hayashi; Masahide Hidai; Teruyuki Hirano; Masayuki Kuzuhara; Masahiro Machida; Taro Matsuo; Tetsuya Nagata; Hirohi Onuki; Masahiro Ogihara; Hideki Takami; Naruhisa Takato; Yasuhiro H. Takahashi; Chihiro Tachinami; Hiroshi Terada; Hajime Kawahara; Tomoyasu Yamamuro

doi:10.1117/12.2055075

14 July 2014 Infrared Doppler instrument (IRD) for the Subaru telescope to search for Earth-like planets around nearby M-dwarfs

Takayuki Kotani, Motohide Tamura, Hiroshi Suto, Jun Nishikawa, Bun'ei Sato, Wako Aoki, Tomonori Usuda, Takashi Kurokawa, Ken Kashiwagi, Shogo Nishiyama, Yuji Ikeda, Donald 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, Masahiro Ikoma, Yasunori Hori, Masashi Omiya, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Olivier Guyon, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Teruyuki Hirano, Masayuki Kuzuhara, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Hirohi Onuki, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Yasuhiro H. Takahashi, Chihiro Tachinami, Hiroshi Terada, Hajime Kawahara, Tomoyasu Yamamuro

Author Affiliations +

Proceedings Volume 9147, Ground-based and Airborne Instrumentation for Astronomy V; 914714 (2014) https://doi.org/10.1117/12.2055075
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

We report the current status of the Infrared Doppler (IRD) instrument for the Subaru telescope, which aims at detecting Earth-like planets around nearby M darwfs via the radial velocity (RV) measurements. IRD is a fiber-fed, near infrared spectrometer which enables us to obtain high-resolution spectrum (R~70000) from 0.97 to 1.75 μm. We have been developing new technologies to achieve 1m/s RV measurement precision, including an original laser frequency comb as an extremely stable wavelength standard in the near infrared. To achieve ultimate thermal stability, very low thermal expansion ceramic is used for most of the optical components including the optical bench.

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Takayuki Kotani, Motohide Tamura, Hiroshi Suto, Jun Nishikawa, Bun'ei Sato, Wako Aoki, Tomonori Usuda, Takashi Kurokawa, Ken Kashiwagi, Shogo Nishiyama, Yuji Ikeda, Donald 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, Masahiro Ikoma, Yasunori Hori, Masashi Omiya, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Olivier Guyon, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Teruyuki Hirano, Masayuki Kuzuhara, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Hirohi Onuki, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Yasuhiro H. Takahashi, Chihiro Tachinami, Hiroshi Terada, Hajime Kawahara, and Tomoyasu Yamamuro "Infrared Doppler instrument (IRD) for the Subaru telescope to search for Earth-like planets around nearby M-dwarfs", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914714 (14 July 2014); https://doi.org/10.1117/12.2055075

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