Stellar Mass Profiles of Galaxies in the Hubble Frontier Fields: Evidence for Mass Dependency in Environmental Quenching

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dc.contributor.advisorMuzzin, Adam
dc.contributor.authorTan, Vivian Yun Yan
dc.date.accessioned2020-11-13T13:44:22Z
dc.date.available2020-11-13T13:44:22Z
dc.date.copyright2020-07
dc.date.issued2020-11-13
dc.date.updated2020-11-13T13:44:22Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractQuiescent galaxies have more diverse morphologies than star-forming galaxies, which might result from being either mass/environmentally quenched. At some point in their lifetimes, galaxies will stop forming new stars and become quiescent, in a process called quenching, which can be driven by internal (mass-dependent) or environmental processes. In the local universe, those two processes are considered independent of each other, but at higher redshift, they might not be separable. We explore the effect environment has on the morphology of quiescent galaxies by analyzing the stellar mass profiles of cluster and field galaxies from the Hubble Frontier Fields at a redshift range of 0.25 < z < 0.6. SED-fitting was used on the photometry to create resolved stellar mass maps, which were parameterized with a Sersic profile to quantify their morphology. The quiescent cluster galaxies were separated into disk-like and bulge-like depending the similarity of their Sersic parameters to star-forming galaxies. The fraction of disk-like quiescent galaxies have an inverse relation to stellar mass and are most abundant at the lowest masses. Since disk-like quiescents arise from environmental-quenching, cluster galaxies with M_ < 10^{9.5}M_ are predominantly environmentally-quenched, and predominantly mass-quenched above that mass limit. This shows that quenching processes that galaxy morphology in clusters are highly mass dependent.
dc.identifier.urihttp://hdl.handle.net/10315/37865
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectAstrophysics
dc.subject.keywordsGalaxies
dc.subject.keywordsExtragalactic
dc.subject.keywordsHigh redshift
dc.subject.keywordsGalaxy clusters
dc.subject.keywordsGalaxy evolution
dc.subject.keywordsGalaxy morphology
dc.subject.keywordsStellar mass
dc.subject.keywordsStar formation rate
dc.subject.keywordsGalaxy quenching
dc.titleStellar Mass Profiles of Galaxies in the Hubble Frontier Fields: Evidence for Mass Dependency in Environmental Quenching
dc.typeElectronic Thesis or Dissertation

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