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Published March 2009 | Published
Journal Article Open

SPACE: the spectroscopic all-sky cosmic explorer

Cimatti, A.
Robberto, M.
Baugh, C. ORCID icon
Beckwith, S. V. W.
Content, R.
Daddi, E. ORCID icon
De Lucia, G.
Garilli, B.
Guzzo, L.
Kauffmann, G.
Lehnert, M. ORCID icon
Maccagni, D.
Martínez-Sansigre, Alejo
Pasian, F.
Reid, I. N.
Rosati, P.
Salvaterra, R.
Stiavelli, M. ORCID icon
Wang, Y.
Zapatero Osorio, M.
Balcells, M.
Bersanelli, M.
Bertoldi, F. ORCID icon
Blaizot, J.
Bottini, D.
Bower, R.
Bulgarelli, A.
Burgasser, A. ORCID icon
Burigana, C
Butler, R. C.
Casertano, S.
Ciardi, B.
Cirasuolo, M.
Clampin, M.
Cole, S.
Comastri, A. ORCID icon
Cristiani, S.
Cuby, J. G.
Cuttaia, F.
De Rosa, A. ORCID icon
Diaz Sanchez, A.
Di Capua, M.
Dunlop, J.
Fan, X. ORCID icon
Ferrara, A. ORCID icon
Finelli, F.
Franceschini, A.
Franx, M. ORCID icon
Franzetti, P.
Frenk, C.
Gardner, Jonathan P.
Gianotti, F.
Grange, R.
Gruppioni, C. ORCID icon
Gruppuso, A.
Hammer, F.
Hillenbrand, L.
Jacobsen, A.
Jarvis, M. ORCID icon
Kennicutt, R. ORCID icon
Kimble, R.
Kriek, M. ORCID icon
Kurk, J.
Kneib, J. P. ORCID icon
Le Fèvre, O. ORCID icon
Macchetto, D.
MacKenty, J.
Madau, P.
Magliocchetti, M.
Maino, D.
Mandolesi, N.
Masetti, N. ORCID icon
McLure, R.
Mennella, A.
Meyer, M. ORCID icon
Mignoli, M.
Mobasher, B.
Molinari, E.
Morgante, G.
Morris, S.
Nicastro, L.
Oliva, E.
Padovani, P.
Palazzi, E.
Paresce, F.
Perez Garrido, A.
Pian, E.
Popa, L.
Postman, M. ORCID icon
Pozzetti, L.
Rayner, J.
Rebolo, R. ORCID icon
Renzini, A. ORCID icon
Röttgering, H.
Schinnerer, E. ORCID icon
Scodeggio, M.
Saisse, M.
Shanks, T.
Shapley, A. ORCID icon
Sharples, R.
Shea, H.
Silk, J.
Smail, I. ORCID icon
Spanó, P.
Steinacker, J.
Stringhetti, L.
Szalay, A.
Tresse, L.
Trifoglio, M.
Urry, M. ORCID icon
Valenziano, L.
Villa, F.
Villo Perez, I.
Walter, F. ORCID icon
Ward, M.
White, R.
White, S.
Wright, E. ORCID icon
Wyse, R.
Zamorani, G.
Zacchei, A.
Zeilinger, W. W.
Zerbi, F.


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 3π 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 (see e.g. Aldering, LBNL report number LBNL-51157, 2001). To achieve the main science objectives, SPACE will use a 1.5 m diameter Ritchey-Chretien telescope equipped with a set of arrays of Digital Micro-mirror Devices covering a total field of view of 0.4 deg^2, 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 0.8 to 1.8 μm. Owing to the depth, redshift range, volume coverage and quality of its spectra, SPACE will reveal with unique sensitivity most of the fundamental cosmological signatures, including the power spectrum of density fluctuations and its turnover. SPACE will also place high accuracy constraints on the dark energy equation of state parameter and its evolution by measuring the baryonic acoustic oscillations imprinted when matter and radiation decoupled, the distance-luminosity relation of cosmological supernovae, the evolution of the cosmic expansion rate, the growth rate of cosmic large-scale structure, and high-z galaxy clusters. The datasets from the SPACE mission will represent a long lasting legacy for the whole astronomical community whose data will be mined for many years to come.

Additional Information

© 2009 Springer Science. 30 November 2007 Accepted: 9 April 2008. Published online: 24 May 2008. The authors acknowledge the support from the University of Bologna and the Space Telescope Science Institute. Thales Alenia - Milano (Italy) is warmly acknowledged for its contributions and support.

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Published - Cimatti2009p12510.1007s10686-008-9096-7.pdf


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