Exploring the intersection of Lyman-U Emitters & Lyman Break Galaxies behind the strongly lensed clusters : Abell370, Abell2744 and MACS0416

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dc.contributor.advisorBauer, Franz Erik
dc.contributor.advisorGuaita, Lucía
dc.contributor.authorPrieto Lyon, Gonzalo
dc.contributor.otherPontificia Universidad Católica de Chile. Instituto de Astrofísica
dc.date.accessioned2021-10-27T19:31:53Z
dc.date.available2021-10-27T19:31:53Z
dc.date.issued2021
dc.descriptionTesis (Magíster en Astrofísica)--Pontificia Universidad Católica de Chile, 2021
dc.description.abstractIn this thesis, we present a study of star-forming galaxies between redshifts 2.9-6.7 split among four categories: Pure LAEs (73 galaxies) without UV detection; Pure LBGs (1015 galaxies) without Lyman-a detection; LAE-LBGs (193 galaxies), with both Lyman break and Lyman-a detected; and Other SFGs without any of these signatures (459 galaxies). We use Multi-Unit Spectroscopic Explorer (MUSE) and legacy Hubble Space Telescope (HST) data of the three Hubble Frontier Fields lensing clusters A370, A2744 and MACS0416, reaching magnitudes as faint as M1500 ≈ −13. We study the continuum and emission-line parameters of our sample, with the goal of finding and understanding any intrinsic differences between the aforementioned regimes of SFGs. We report a great diversity of high-redshift galaxies in the Lyman-a - M1500 plane, with a lack of massive galaxies above the SFR(Lya)=SFR(UV) line at M1500 < −18, with most pure LAEs near this line and log(Llya)<42.0. We measure the UV slope of pure LBGs and LAE-LBGs, with median values of ß=-1.75 and ß=-2.44 respectively, meaning that LAEs overall are near the dust-free domain while pure LBGs tend to be redder, and hence presumably more dust-obscured and/or older, the former being one of the probable reasons for their lack of Lyman-a; SFGs without LB or Lya show redder median slopes of ß=-1.59. LAE-LBGs tend to have a stronger sSFR than pure LBGs and other SFGs by a factor of 2 at every studied redshift. We find slight differences between the two LAE populations, with LAE-LBGs showing broader Lyman-a profiles, but further radiative transfer simulations are needed to clarify the contribution of HI velocity and column density.
dc.format.extent57 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/tesisUC/AST/62891
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AST/62891
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/62891
dc.information.autorucInstituto de Astrofísica ; Bauer, Franz Erik ; 0000-0002-8686-8737 ; 1007961
dc.information.autorucInstituto de Astrofísica ; Guaita, Lucía ; 0000-0002-4902-0075 ; 160901
dc.information.autorucInstituto de Astrofísica ; Prieto Lyon, Gonzalo ; 0000-0002-6342-0331 ; 221918
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subject.ddc523.112
dc.subject.deweyAstronomíaes_ES
dc.subject.otherGalaxias - Observacioneses_ES
dc.subject.otherGalaxias - Medicioneses_ES
dc.titleExploring the intersection of Lyman-U Emitters & Lyman Break Galaxies behind the strongly lensed clusters : Abell370, Abell2744 and MACS0416es_ES
dc.typetesis de maestría
sipa.codpersvinculados1007961
sipa.codpersvinculados160901
sipa.codpersvinculados221918
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