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Proceedings Paper

SPICA coronagraph instrument: characterization of atmospheres and physical parameters of giant planets by direct imaging and spectroscopy
Author(s): T. Kotani; K. Enya; T. Nakagawa; H. Matsuhara; H. Kataza; M. Kawada; M. Mita; K. Komatsu; H. Uchida; K. Fujiwara; S. Mitani; S. Sakai; K. Haze; H. Kaneda; S. Oyabu; D. Ishihara; T. Miyata; S. Sako; T. Nakamura; K. Asano; M. Tamura; J. Nishikawa; T. Yamashita; N. Narita; H. Hayano; S. Oya; E. Kokubo; Y. Itoh; T. Matsuo; M. Fukagawa; H. Shibai; M. Honda; N. Baba; N. Murakami; Y. K. Okamoto; S. Ida; M. Takami; L. Abe; O. Guyon; T. Yamamuro
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Paper Abstract

We present the current status of the development of the SPICA Coronagraph Instrument (SCI). SPICA is a next-generation 3-meter class infrared telescope, which will be launched in 2022. SCI is high-contrast imaging, spectroscopic instrument mainly for direct detection and spectroscopy of extra-solar planets in the near-to-mid infrared wavelengths to characterize their atmospheres, physical parameters and evolutionary scenarios. SCI is now under the international review process. In this paper, we present a science case of SCI. The main targets of SCI, not only for direct imaging but also for spectroscopy, are young to matured giant planets. We will also show that some of known exoplanets by ground-based direct detection are good targets for SCI, and a number of direct detection planets that are suitable for SCI will be significantly increased in the next decade. Second, a general design of SCI and a key technology including a new high-throughput binary mask coronagraph, will be presented. Furthermore, we will show that SCI is potentially capable of achieving 10-6 contrast by a PSF subtraction method, even with a telescope pointing error. This contrast enhancement will be important to characterize low-mass and cool planets.

Paper Details

Date Published: 21 September 2012
PDF: 11 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84420F (21 September 2012); doi: 10.1117/12.925832
Show Author Affiliations
T. Kotani, National Astronomical Observatory of Japan (Japan)
K. Enya, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
T. Nakagawa, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Matsuhara, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Kataza, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
M. Kawada, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
M. Mita, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
K. Komatsu, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Uchida, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)
K. Fujiwara, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
S. Mitani, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)
S. Sakai, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
K. Haze, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Kaneda, Nagoya Univ. (Japan)
S. Oyabu, Nagoya Univ. (Japan)
D. Ishihara, Nagoya Univ. (Japan)
T. Miyata, The Univ. of Tokyo (Japan)
S. Sako, The Univ. of Tokyo (Japan)
T. Nakamura, The Univ. of Tokyo (Japan)
K. Asano, The Univ. of Tokyo (Japan)
M. Tamura, National Astronomical Observatory of Japan (Japan)
GUAS (Japan)
J. Nishikawa, National Astronomical Observatory of Japan (Japan)
T. Yamashita, National Astronomical Observatory of Japan (Japan)
N. Narita, National Astronomical Observatory of Japan (Japan)
H. Hayano, Subaru Telescope, National Astronomical Observatory of Japan (United States)
S. Oya, Subaru Telescope, National Astronomical Observatory of Japan (United States)
E. Kokubo, National Astronomical Observatory of Japan (Japan)
Y. Itoh, Kobe Univ. (Japan)
T. Matsuo, Kyoto Univ. (Japan)
M. Fukagawa, Osaka Univ. (Japan)
H. Shibai, Kyoto Univ. (Japan)
M. Honda, Kanagawa Univ. (Japan)
N. Baba, Hokkaido Univ. (Japan)
N. Murakami, Hokkaido Univ. (Japan)
Y. K. Okamoto, Institute of Astrophysics and Planetary Sciences, Ibaraki Univ. (Japan)
S. Ida, Tokyo Institute of Technology (Japan)
M. Takami, Institute of Astronomy and Astrophysics (Taiwan)
L. Abe, Lab. Hippolyte Fizeau, CNRS, Univ. de Nice Sophia-Antipolis (France)
O. Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
T. Yamamuro, OptCraft (Japan)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann Jr., Editor(s)

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