text:   stripping in a merging system at z~4.57",5,"['My new paper is out!\n""CGM pollution and gas mixing by tidal stripping in a merging system at z~4.57"" <LINK>\nHere we show ALMA/HST+ observations of an interesting major merging system at z~4.5 (observed in ALPINE), close to a density peak of a protocluster.\n1/ <LINK>', 'ALMA reveals [CII] arising from an extended structure (~30 kpc) surrounding the system, and about 50% of the total flux resides *between* the individual galaxy components, in a sort of metal-enriched gaseous envelope with a disturbed morphology and complex kinematics. \n2/', 'Similarly to shock-excited [CII] observed in tidal tails in local groups, we interpret our results as a possible signature of ISM stripped by strong gravitational interactions, with some contribution from material ejected by outflows and SF in small faint satellites.\n3/', 'Our findings suggest that strong dynamical interactions in major merging systems at high-z can be an efficient mechanism for extracting gas out of galaxies and mixing the CGM with metals. This might also represent a natural channel to feed and enrich the nascent proto-ICM.\n4/4', 'PS: the paper is submitted to A&amp;A. Any comments are welcome!\n\nPPS: stay tuned for future ALPINE papers on the morpho-kinematical characterisation of high-z galaxies.']",20,04,1252