Large format imaging spectrograph for the Large Submillimeter Telescope (LST)

Conference paper (2020)

Authors

Kotaro Kohno University of Tokyo
Ryohei Kawabe Graduate University for Advanced Studies (SOKENDAI), National Astronomical Observatory of Japan
Yoichi Tamura Nagoya University
A. Endo Tera-Hertz Sensing - EEMCS
J.J.A. Baselmans Tera-Hertz Sensing - EEMCS , SRON Netherlands Institute for Space Research
K. Karatsu SRON Netherlands Institute for Space Research, Tera-Hertz Sensing - EEMCS
Akio K. Inoue Osaka Sangyo University, Waseda University
Kana Moriwaki University of Tokyo
Natsuki H. Hayatsu University of Tokyo
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Research Group
Tera-Hertz Sensing (EEMCS) (TU Delft)
Copyright: © 2020 Kotaro Kohno, Ryohei Kawabe, Yoichi Tamura, A. Endo, J.J.A. Baselmans, K. Karatsu, Akio K. Inoue, Kana Moriwaki, Natsuki H. Hayatsu, More Authors
DOI: https://doi.org/10.1117/12.2561238
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Published Date

2020

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Tera-Hertz Sensing

Abstract

We present a conceptual study of a large format imaging spectrograph for next-generation large (50-m class) single-dish telescopes, i.e., the Large Submillimeter Telescope (LST) and Atacama Large Aperture Submillimeter Telescope (AtLAST). Recent discoveries of high-redshift star-forming galaxies at z=8-9 and candidate quiescent galaxies at z~6 indicate the onset of earliest star formation just a few 100 million years after the Big Bang (i.e., z = 12 - 15), and LST/AtLAST will provide a unique pathway to uncover spectroscopically-identified ``first forming galaxies’’ in the pre-reionization era, once it will be equipped with a large format imaging spectrograph. We describe the preliminary of 3-band, medium resolution (R=2000) imaging spectrograph with ~1.5 M detectors in total based on the KATANA concept (Karatsu et al.~2019), which exploits technologies of the integrated superconducting spectrometer (ISS) and a large-format imaging array like A-MKID.

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