Tracing the Evolution of Dust Obscured Star Formation and Accretion Back to the Reionisation Epoch with SPICA
Date Issued
2017
Author(s)
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Ciesla, L.
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Hatziminaoglou, E.
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Pozzi, F.
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Rodighiero, G.
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•
Armus, L.
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Baes, M.
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Braine, J.
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Charmandaris, V.
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Clements, D. L.
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Christopher, N.
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Dannerbauer, H.
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Efstathiou, A.
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Egami, E.
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•
•
Franceschini, A.
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González-Alfonso, E.
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Griffin, M.
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Kaneda, H.
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Marchetti, L.
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Nakagawa, T.
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Onaka, T.
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Papadopoulos, A.
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Pearson, C.
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Pérez-Fournon, I.
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Peréz-González, P.
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Roelfsema, P.
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Scott, D.
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Serjeant, S.
•
•
Vaccari, M.
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van der Tak, F.
•
Vignali, C.
•
Wang, L.
•
Wada, T.
Abstract
Our current knowledge of star formation and accretion luminosity at high redshift (z > 3-4), as well as the possible connections between them, relies mostly on observations in the rest-frame ultraviolet, which are strongly affected by dust obscuration. Due to the lack of sensitivity of past and current infrared instrumentation, so far it has not been possible to get a glimpse into the early phases of the dust-obscured Universe. Among the next generation of infrared observatories, SPICA, observing in the 12-350 µm range, will be the only facility that can enable us to trace the evolution of the obscured star-formation rate and black-hole accretion rate densities over cosmic time, from the peak of their activity back to the reionisation epoch (i.e., 3 < z ≲ 6-7), where its predecessors had severe limitations. Here, we discuss the potential of photometric surveys performed with the SPICA mid-infrared instrument, enabled by the very low level of impact of dust obscuration in a band centred at 34 µm. These unique unbiased photometric surveys that SPICA will perform will fully characterise the evolution of AGNs and star-forming galaxies after reionisation.
Volume
34
Start page
e055
Issn Identifier
1448-6083
Ads BibCode
2017PASA...34...55G
Rights
open.access
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