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What have we learned ? ( very briefly )

Sources of the CIB are found up to z~2 Not fully characterised beyond statiscial properties N(>S), n(z), SFR-M* Not understood theoriticalky (SAM, Hydro) CIB at higher redshift still unknown Hints from SMGs Study of CIBA: Very well measured H as not reached its potential

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What have we learned ? ( very briefly )

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  1. Sources of the CIB are found up to z~2 • Not fullycharacterisedbeyondstatiscialproperties • N(>S), n(z), SFR-M* • Not understoodtheoriticalky(SAM, Hydro) • CIB athigherredshiftstillunknown • HintsfromSMGs • Study of CIBA: • Verywellmeasured • Has not reacheditspotential • « IR-galaxies » exist up to veryhigh-redshift (z~5.7) • Cluster formation at z~2-3 Whathave welearned? (verybriefly)

  2. SPT/ACT ALMA Planck, Herschel WISE CCAT R&D New devices Very large matrices « IFU »- like Euclid JWST SPICA DES LSST PFS … Our future? Galaxy formation Relation to DarkMatter Reionisation

  3. Tracers of SF: IR photometry, C+, CO • How to use them? • How to go beyond the detection? • Modeling: SAM, Hydro, AM/HOD • Which observations are critical to makeprogress? • Measure the gas fraction athigh-redshift? • Tools: • Redshift: fromsubmm/mm lines • M* fromdust mass? • Stronglensing for CIB meanleveldetermination? • Cross-correlation: whatwewilllearn? • Combination of weak-lensing/CIB anisotropies? • First objects/reionisation: Whichprogress? • kSZ • near-IR background fluctuations Some questions

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