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27 April 2024

» arxiv » 0804.4433

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SPACE: the SPectroscopic All-sky Cosmic Explorer
A. Cimatti ; M. Robberto ; C.M. Baugh ; S.V.W. Beckwith ; R. Content ; E. Daddi ; G. De Lucia ; B. Garilli ; L. Guzzo ; G. Kauffmann ; M. Lehnert ; D. Maccagni ; A. Martinez-Sansigre ; F. Pasian ; I. N. Reid ; P. Rosati ; R. Salvaterra ; M. Stiavelli ; Y. Wang ; M. Zapatero Osorio ; SPACE team ;
Date:	28 Apr 2008
Abstract:	We describe the scientific motivations, the mission concept and the instrumentation of SPACE, a class-M mission proposed for concept study at the first call of the ESA Cosmic-Vision 2015-2025 planning cycle. SPACE aims to produce the largest three-dimensional evolutionary map of the Universe over the past 10 billion years by taking near-IR spectra and measuring redshifts for more than half a billion galaxies at 0<z<2 down to AB~23 over 3pi sr of the sky. In addition, SPACE will also target a smaller sky field, performing a deep spectroscopic survey of millions of galaxies to AB~26 and at 2<z<10+. These goals are unreachable with ground-based observations due to the ~500 times higher sky background. To achieve the main science objectives, SPACE will use a 1.5m diameter Ritchey-Chretien telescope equipped with a set of arrays of Digital Micro-mirror Devices (DMDs) covering a total field of view of 0.4 deg2, and will perform large-multiplexing multi-object spectroscopy (e.g. ~6000 targets per pointing) at a spectral resolution of R~400 as well as diffraction-limited imaging with continuous coverage from 0.8mum to 1.8mum.
Source:	arXiv, 0804.4433
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