S20B0109abst
S20B0109
Models of cosmological structure formation in a cold dark matter universe predict that the matter in the intergalactic medium (IGM) form a cosmic web of sheets and filaments. Streams of cold gas flowing along the IGM filaments can provide fuel for the growth of galaxies and SMBHs. Recently we have finally identified such cosmic web filaments at a z=3.1 proto-cluster core tracing extended Lyα emission, associated with a number of dusty starbursts and X-ray AGNs. The region is therefore undoubtedly invaluable target to understand how galaxy grow and evolve in the cosmic web. Here we propose deep Keck/MOSFIRE spectroscopy to obtain H-band and K-band spectra for (a) quiescent galaxies and (b) star-forming galaxies located within or in the vicinity of the Lyα filaments. We aim to (i) confirm the emergence of red sequence at z=3.1 and assess quenching mechanism, (ii) uncover metal-enrichment along the cosmic web, and (iii) reveal how star-forming galaxies contribute to illuminate the Lyα filaments. This joint survey targeting various galaxy populations will uncover novel aspects of galaxy growth in cosmic web.
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