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SPICA: a joint infrared space observatory (Conference Presentation)

Roelfsema, Peter R. and Shibai, Hiroshi and Wafelbakker, Kees and de Lange, Gert and Giard, Martin and Najarro, Francisco and Audard, Marc and Armus, Lee and Bradford, Charles M. and Doi, Yasuo and Griffin, Matt and Helmich, Frank and Kamp, Inga and Kaneda, Hidehiro and Kemper, Ciska and Kerschbaum, Franz and Kohno, Kotaro and Krause, Oliver and Larsson, Bengt and Madden, Sue and Matsuhara, Hideo and Nakagawa, Takao and Naylor, David and Ogawa, Hiroyuki and Onaka, Takashi and Spinoglio, Luigi and van der Tak, Floris and Vandenbussche, Bart and Yamada, Toru (2018) SPICA: a joint infrared space observatory (Conference Presentation). In: Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. Proceedings of SPIE. No.10698. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 106980A. ISBN 9781510619494.

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Measurements in the infrared wavelength domain allow us to assess directly the physical state and energy balance of cool matter in space, thus enabling the detailed study of the various processes that govern the formation and early evolution of stars and planetary systems in the Milky Way and of galaxies over cosmic time. Previous infrared missions, from IRAS to Herschel, have revealed a great deal about the obscured Universe, but sensitivity has been limited because up to now it has not been possible to fly a telescope that is both large and cold. Such a facility is essential to address key astrophysical questions, especially concerning galaxy evolution and the development of planetary systems. SPICA is a mission concept aimed at taking the next step in mid- and far-infrared observational capability by combining a large and cold telescope with instruments employing state-of-the-art ultra-sensitive detectors. The mission concept foresees a 2.5-meter diameter telescope cooled to below 8 K. Rather than using liquid cryogen, a combination of passive cooling and mechanical coolers will be used to cool both the telescope and the instruments. With cooling not dependent on a limited cryogen supply, the mission lifetime can extend significantly beyond the required three years. The combination of low telescope background and instruments with state-of-the-art detectors means that SPICA can provide a huge advance on the capabilities of previous missions. The SPICA instrument complement offers spectral resolving power ranging from ~50 through 11000 in the 17-230 µm domain as well as ~28.000 spectroscopy between 12 and 18 µm. Additionally, SPICA will be capable of efficient 30-37 µm broad band mapping, and small field spectroscopic and polarimetric imaging in the 100-350 µm range. SPICA will enable far infrared spectroscopy with an unprecedented sensitivity of ~5x10^(-20) W/m^2 (5σ/1hr) - at least two orders of magnitude improvement over what has been attained to date. With this exceptional leap in performance, new domains in infrared astronomy will become accessible, allowing us, for example, to unravel definitively galaxy evolution and metal production over cosmic time, to study dust formation and evolution from very early epochs onwards, and to trace the formation history of planetary systems.

Item Type:Book Section
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URLURL TypeDescription
Armus, Lee0000-0003-3498-2973
Bradford, Charles M.0000-0001-5261-7094
Kohno, Kotaro0000-0002-4052-2394
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:10698
Record Number:CaltechAUTHORS:20190823-134013934
Persistent URL:
Official Citation:Peter R. Roelfsema, Hiroshi Shibai, Kees Wafelbakker, Gert de Lange, Martin Giard, Francisco Najarro, Marc Audard, Lee Armus, Charles M. Bradford, Yasuo Doi, Matt Griffin, Frank Helmich, Inga Kamp, Hidehiro Kaneda, Ciska Kemper, Franz Kerschbaum, Kotaro Kohno, Oliver Krause, Bengt Larsson, Sue Madden, Hideo Matsuhara, Takao Nakagawa, David Naylor, Hiroyuki Ogawa, Takashi Onaka, Luigi Spinoglio, Floris van der Tak, Bart Vandenbussche, and Toru Yamada "SPICA: a joint infrared space observatory (Conference Presentation)", Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106980A (10 July 2018);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98188
Deposited By: George Porter
Deposited On:23 Aug 2019 22:26
Last Modified:09 Mar 2020 13:18

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