{"paper":{"title":"The angular momentum of baryons and dark matter halos revisited","arxiv_id":"1106.0538","primary_cat":"astro-ph.CO","submitted_at":"2011-06-03T00:06:01+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v1","sentences":[{"i":0,"p":1.0,"id":"s0","own":false,"role":"background","text":"Recent theoretical studies have shown that galaxies at high redshift are fed by cold, dense gas filaments, suggesting angular momentum transport by gas differs from that by dark matter.","hedge":{"p":0.95,"label":"hedged_possibility"},"own_p":0.04,"main_claim_p":0.05,"quantitative":false,"quantitative_p":0.31,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":1.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":1,"p":0.94,"id":"s1","own":true,"role":"result","text":"Revisiting this issue using high-resolution cosmological hydrodynamics simulations with adaptive mesh refinement, we find that at the time of accretion, gas and dark matter do carry a similar amount of specific angular momentum, but that it is systematically higher than that of the dark matter halo as a whole.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.97,"main_claim_p":0.41,"quantitative":true,"quantitative_p":0.94,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.94,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.06,"interpretation":0.0}},{"i":2,"p":1.0,"id":"s2","own":true,"role":"result","text":"At high redshift, freshly accreted gas rapidly streams into the central region of the halo, directly depositing this large amount of angular momentum within a sphere of radius r=0.1rvir.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.87,"main_claim_p":0.11,"quantitative":true,"quantitative_p":0.94,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":3,"p":0.99,"id":"s3","own":true,"role":"result","text":"In contrast, dark matter particles pass through the central region unscathed, and a fraction of them ends up populating the outer regions of the halo (r/rvir>0.1), redistributing angular momentum in the process.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.87,"main_claim_p":0.08,"quantitative":true,"quantitative_p":0.85,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.01}},{"i":4,"p":0.99,"id":"s4","own":true,"role":"interpretation","text":"As a result, large-scale motions of the cosmic web have to be considered as the origin of gas angular momentum rather than its virialised dark matter halo host.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.63,"main_claim_p":0.59,"quantitative":false,"quantitative_p":0.14,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.01,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.99}},{"i":5,"p":0.79,"id":"s5","own":true,"role":"result","text":"This generic result holds for halos of all masses at all redshifts, as radiative cooling ensures that a significant fraction of baryons remain trapped at the centre of the halos.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.69,"main_claim_p":0.19,"quantitative":false,"quantitative_p":0.21,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.79,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.21}},{"i":6,"p":0.99,"id":"s6","own":true,"role":"result","text":"Despite this injection of angular momentum enriched gas, we predict an amount for stellar discs which is in fair agreement with observations at z=0.","hedge":{"p":0.65,"label":"asserted"},"own_p":0.9,"main_claim_p":0.1,"quantitative":true,"quantitative_p":0.85,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.99,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.01}},{"i":7,"p":0.64,"id":"s7","own":true,"role":"interpretation","text":"This arises because the total specific angular momentum of the baryons remains close to that of dark matter halos.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.78,"main_claim_p":0.14,"quantitative":true,"quantitative_p":0.9,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.36,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.64}},{"i":8,"p":0.93,"id":"s8","own":true,"role":"interpretation","text":"We propose a new scenario where gas efficiently carries the angular momentum generated by large-scale structure motions deep inside dark matter halos, redistributing it only in the vicinity of the disc.","hedge":{"p":0.58,"label":"speculative"},"own_p":0.53,"main_claim_p":0.7,"quantitative":false,"quantitative_p":0.06,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.01,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.06,"interpretation":0.93}}]},"compiled":{"main_claim":{"p":0.72,"text":"We propose a new scenario where gas efficiently carries the angular momentum 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