The VLT LBG redshift survey - VI. Mapping HI in the proximity of z similar to 3 LBGs with X-Shooter

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dc.contributor.authorBielby, R. M.
dc.contributor.authorShanks, T.
dc.contributor.authorCrighton, N. H. M.
dc.contributor.authorBornancini, C. G.
dc.contributor.authorInfante, L.
dc.contributor.authorLambas, D. G.
dc.contributor.authorMinniti, D.
dc.contributor.authorMorris, S. L.
dc.contributor.authorTummuangpak, P.
dc.date.accessioned2024-01-10T12:44:21Z
dc.date.available2024-01-10T12:44:21Z
dc.date.issued2017
dc.description.abstractWe present an analysis of the spatial distribution and dynamics of neutral hydrogen gas around galaxies using new X-Shooter observations of z similar to 2.5-4 quasars. Adding the X-Shooter data to our existing data set of high-resolution quasar spectroscopy, we use a total sample of 29 quasars alongside similar to 1700 Lyman Break Galaxies (LBGs) in the redshift range 2 less than or similar to z less than or similar to 3.5. We measure the Ly alpha forest auto-correlation function, finding a clustering length of s(0) = 0.081 +/- 0.006 h(-1) Mpc, and the cross-correlation function with LBGs, finding a cross-clustering length of s0 = 0.27 +/- 0.14 h(-1) Mpc and power-law slope gamma = 1.1 +/- 0.2. Our results highlight the weakly clustered nature of neutral hydrogren systems in the Ly alpha forest. Building on this, we make a first analysis of the dependence of the clustering on absorber strength, finding a clear preference for stronger Ly alpha forest absorption features to be more strongly clustered around the galaxy population, suggesting that they trace on average higher mass haloes. Using the projected and 2-D cross-correlation functions, we constrain the dynamics of Ly alpha forest clouds around z similar to 3 galaxies. We find a significant detection of large-scale infall of neutral hydrogen, with a constraint on the Ly alpha forest infall parameter of beta(F) = 1.02 +/- 0.22.
dc.description.funderSTFC
dc.description.funderAustralian Research Council for Discovery Project
dc.description.funderBASAL CATA
dc.description.funderMillennium Institute for Astrophysics MAS
dc.description.funderConicyt
dc.description.funderAnillo
dc.description.funderNASA
dc.description.funderScience and Technology Facilities Council
dc.fechaingreso.objetodigital2024-04-29
dc.format.extent13 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stx1772
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stx1772
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77666
dc.identifier.wosidWOS:000409022700061
dc.information.autorucAstrofísica; Infante L;S/I;55248
dc.issue.numero2
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final2186
dc.pagina.inicio2174
dc.publisherOXFORD UNIV PRESS
dc.revistaMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.rightsacceso restringido
dc.subjectintergalactic medium
dc.subjectgalaxies: kinematics and dynamics
dc.subjectlarge-scale structure of Universe
dc.subjectcosmology: observations
dc.subjectALPHA ABSORPTION SYSTEMS
dc.subjectLYMAN-BREAK GALAXIES
dc.subjectINTERGALACTIC MEDIUM
dc.subjectCOSMOLOGICAL SIMULATIONS
dc.subjectCROSS-CORRELATION
dc.subjectGASEOUS EXTENT
dc.subjectSTAR-FORMATION
dc.subjectABSORBING GALAXIES
dc.subjectSTELLAR FEEDBACK
dc.subjectGAS
dc.titleThe VLT LBG redshift survey - VI. Mapping HI in the proximity of z similar to 3 LBGs with X-Shooter
dc.typeartículo
dc.volumen471
sipa.codpersvinculados55248
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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