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arXiv · 2304.08104

GREX-PLUS Science Book

PLUS Science Team·Akio K. Inoue·Yuichi Harikane·Takashi Moriya·Hideko Nomura·Shunsuke Baba·Yuka Fujii·Naoteru Gouda·Yasuhiro Hirahara·Yui Kawashima·Tadayuki Kodama·Yusei Koyama·Hiroyuki Kurokawa·Taro Matsuo·Yoshiki Matsuoka·Shuji Matsuura·Ken Mawatari·Toru Misawa·Kentaro Nagamine·Kimihiko Nakajima·Shota Notsu·Takafumi Ootsubo·Kazumasa Ohno·Hideo Sagawa·Takashi Shimonishi·Ken-ichi Tadaki·Michihiro Takami·Tsuyoshi Terai·Yoshiki Toba·Takuji Yamashita·Chikako Yasui
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Abstract

GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary sciences are two-fold: galaxy formation and evolution and planetary system formation and evolution. The GREX-PLUS spacecraft will carry a 1.2 m primary mirror aperture telescope cooled down to 50 K. The two science instruments will be onboard: a wide-field camera in the 2-8 $\mu$m wavelength band and a high resolution spectrometer with a wavelength resolution of 30,000 in the 10-18 $\mu$m band. The GREX-PLUS wide-field camera aims to detect the first generation of galaxies at redshift $z>15$. The GREX-PLUS high resolution spectrometer aims to identify the location of the water ``snow line'' in proto-planetary disks. Both instruments will provide unique data sets for a broad range of scientific topics including galaxy mass assembly, origin of supermassive blackholes, infrared background radiation, molecular spectroscopy in the interstellar medium, transit spectroscopy for exoplanet atmosphere, planetary atmosphere in the Solar system, and so on.

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PLUS Science Team, Akio K. Inoue, Yuichi Harikane, Takashi Moriya, Hideko Nomura, Shunsuke Baba, Yuka Fujii, Naoteru Gouda, Yasuhiro Hirahara, Yui Kawashima, Tadayuki Kodama, Yusei Koyama, Hiroyuki Kurokawa, Taro Matsuo, Yoshiki Matsuoka, Shuji Matsuura, Ken Mawatari, Toru Misawa, Kentaro Nagamine, Kimihiko Nakajima, Shota Notsu, Takafumi Ootsubo, Kazumasa Ohno, Hideo Sagawa, Takashi Shimonishi, Ken-ichi Tadaki, Michihiro Takami, Tsuyoshi Terai, Yoshiki Toba, Takuji Yamashita, Chikako Yasui. 2023-04-17. GREX-PLUS Science Book. https://arxiv.org/abs/2304.08104

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