High-Resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096

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dc.catalogadorpva
dc.contributor.advisorTreister, Ezequiel
dc.contributor.authorRiesco Bravo, Clemente
dc.contributor.otherPontificia Universidad Católica de Chile. Instituto de Astrofísica
dc.date.accessioned2025-06-03T17:31:50Z
dc.date.available2025-06-03T17:31:50Z
dc.date.issued2025
dc.descriptionTesis (Master’s degree in Astrophysics)--Pontificia Universidad Católica de Chile, 2025
dc.description.abstractLuminous and Ultra-luminous IR galaxies ((U)LIRGs) are critical for investigating feedback mechanisms due to a combination of intense star formation (SF) episodes and active galactic nuclei (AGN) in the context of complex galaxy interactions. We conduct a detailed analysis of the local(z = 0.0365) merging system II Zw 096 using the Multi-Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope (VLT), combining high-resolution Narrow Field Mode (NFM) and wide-area Wide Field Mode (WFM) observations. We mapped the morphology, kinematics, and ionizing radiation of the system’s gas by fitting atomic emission lines, and analysed the kinematics, age, and metallicity of the stellar population by fitting the continuum. We identify three or more distinct galaxies within II Zw 096, in contrast to previous studies suggesting the presence of only two. Our analysis reveals rotational patterns in the gas and stellar components, as well as complex interactions consistent with a collapsing small galaxy group. The kinematics and ionization structures suggest high star formation rates, shock-driven processes and post-Starburst events, which align with this proposed scenario. Focusing on the D1 compact region, which contributes 40–70% of the system’s IR emission, and combining information from archival multi-wavelength observations from Chandra and ALMA, we find strong evidence for the presence of a heavily obscured AGN powering it. Our analysis of the internal structure, interactions, and merger state of II Zw 096 offers novel insights into the galaxy evolution processes taking place in this dynamic and highly chaotic system.
dc.fechaingreso.objetodigital2025-06-03
dc.format.extent75 páginas
dc.fuente.origenSRIA
dc.identifier.doi10.7764/tesisUC/AST/104563
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AST/104563
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/104563
dc.information.autorucInstituto de Astrofísica; Treister, Ezequiel; 0000-0001-7568-6412; 1031846
dc.information.autorucInstituto de Astrofísica; Riesco Bravo, Clemente; S/I; 1064496
dc.language.isoen
dc.nota.accesocontenido completo
dc.rightsacceso abierto
dc.subject.ddc520
dc.subject.deweyAstronomíaes_ES
dc.titleHigh-Resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096
dc.typetesis de maestría
sipa.codpersvinculados1031846
sipa.codpersvinculados1064496
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