Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera   (IRC) for AKARI

Youichi Ohyama (1); Takashi Onaka (2); Hideo Matsuhara (1); Takehiko; Wada (1); Woojung Kim (1); Naofumi Fujishiro (3); Kazunori Uemizu (1); Itsuki; Sakon (2); Martin Cohen (4); Miho Ishigaki (5); Daisuke Ishihara (2),; Yoshifusa Ita (1); Hirokazu Kataza (1); Toshio Matsumoto (1); Hiroshi; Murakami (1); Shinki Oyabu (1); Toshihiko Tanabe (6); Toshinobu Takagi (1),; Munetaka Ueno (7); Fumio Usui (1); Hidenori Watarai (8); Chris P. Pearson (1; and 9); Norihide Takeyama (10); Tomoyasu Yamamuro (10); and Yuji Ikeda (10); ((1) ISAS/JAXA; (2) Department of Astronomy; The University of Tokyo; (3); Department of Physics; The University of Tokyo; (4) Radio Astronomy; Laboratory; University of California; (5) Department of Physics; Tokyo; Institute of Technology; (6) Institute of Astronomy; The University of Tokyo,; (7) Department of Earth Science; Astronomy; The University of Tokyo; (8); Office of Space Applications; JAXA; (9) ISO Data Center; ESA; (10) Genesia; Corporation)

arXiv:0708.4290·astro-ph·May 13, 2015

Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera (IRC) for AKARI

Youichi Ohyama (1), Takashi Onaka (2), Hideo Matsuhara (1), Takehiko, Wada (1), Woojung Kim (1), Naofumi Fujishiro (3), Kazunori Uemizu (1), Itsuki, Sakon (2), Martin Cohen (4), Miho Ishigaki (5), Daisuke Ishihara (2),, Yoshifusa Ita (1), Hirokazu Kataza (1)

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TL;DR

The IRC instrument on the AKARI satellite offers unique low-resolution, wide-field infrared spectroscopy capabilities in space, enabling sensitive surveys in the near- and mid-infrared ranges.

Contribution

This paper details the specifications and in-orbit performance of the IRC spectrograph, highlighting its unique space-based wide-field spectroscopic capabilities.

Findings

01

Successful in-orbit operation of IRC spectrograph

02

Achieved sensitive wide-field infrared spectroscopy

03

Demonstrated performance aligns with specifications

Abstract

The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8-26.5um for the pointed observation mode of the AKARI, it has a spectroscopic capability in its spectral range. By replacing the imaging filters by transmission-type dispersers on the filter wheels, it provides low-resolution (lambda/d_lambda ~ 20-120) spectroscopy with slits or in a wide imaging field-of-view (approximately 10'X10'). The IRC spectroscopic mode is unique in space infrared missions in that it has the capability to perform sensitive wide-field spectroscopic surveys in the near- and mid-infrared wavelength ranges. This paper describes specifications of the IRC spectrograph and its in-orbit performance.

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