S20A0045abst
S20A0045
Recent deep ALMA observations find that the average [Cii] 158 µm line structure from 18 normal star-forming galaxies at z=5.15−7.14 is extended out to a radius of ∼10 kpc. Such surface brightness profile is well consistent with the average Lyα halo profile homogeneously identified around similar high-z star-forming galaxies in the recent MUSE observations. Here we propose FOCAS IFU spectroscopy for a luminous star-forming galaxy HSC J1211-0118 (hereafeter J1211) at z=6.033, uniquely identified in the ∼ 400 deg2 wide Subaru/Hyper Suprime-Cam survey, to reveal its Lyα halo structure. Both Lyα and [Cii] lines are brightly detected from J1211 in previous observations. Owing to the uniquely luminous property, J1211 is thus the best target to investigate the connection between the diffuse [Cii] and Lyα halos in the individual, direct comparison of their 2D (+3D) structures for the first time. With the large set of ancillary data including the current and forthcoming ALMA, we will fully illustrate the interplay between the star-forming galaxy and circum-galactic medium via the neutral hydrogen and the multi-phase metal-enriched gas in the early Universe.
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