Tracing the evolution of dust obscured star-formation and accretion back to the reionisation epoch with SPICA

C. Gruppioni 1 L. Ciesla 2 E. Hatziminaoglou 3 F. Pozzi 4 G. Rodighiero 5 P. Santini 6 L. Armus M. Baes 7 J. Braine 8 V. Charmandaris 9 D. L. Clements 10 N. Christopher H. Dannerbauer 11 A. Efstathiou E. Egami 12 J. A. Fernández-Ontiveros 13 F. Fontanot A. Franceschini 5 E. Gonzalez-Alfonso M. Griffin 14 H. Kaneda L. Marchetti P. Monaco 15 T. Nakagawa T. Onaka A. Papadopoulos 16 C. Pearson I. Pérez-Fournon 3 P. Perez-Gonzalez P. Roelfsema D. Scott S. Serjeant 17 L. Spinoglio 18 M. Vaccari 19 F. Van Der Tak 20 C. Vignali 21 L. Wang T. Wada
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 (UV), which are strongly affected by dust obscuration. Due to the lack of sensitivity of past and current infrared (IR) 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 IR observatories, SPICA, observing in the 12-350 micron range, will be the only facility that can enable us to make the required leap forward in understanding the obscured star-formation rate and black-hole accretion rate densities (SFRD and BHARD, respectively) with respect to what Spitzer and Herschel achieved in the mid- and far-IR at z<3. In particular, SPICA will have the unique ability to trace the evolution of the obscured SFRD and BHARD over cosmic time, from the peak of their activity back to the reionisation epoch (i.e., 3
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C. Gruppioni, L. Ciesla, E. Hatziminaoglou, F. Pozzi, G. Rodighiero, et al.. Tracing the evolution of dust obscured star-formation and accretion back to the reionisation epoch with SPICA. Publications of the Astronomical Society of Australia, Cambridge University Press (CUP), 2017, 34, ⟨10.1017/pasa.2017.49⟩. ⟨hal-01612984⟩



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