Evolution of galaxy morphology in the field and cluster environment since z ∼ 1

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dc.contributor.advisor Sawicki, Marcin,1969-
dc.contributor.advisor Damjanov, Ivana
dc.creator George, Angelo
dc.date.accessioned 2020-10-21T16:37:51Z
dc.date.available 2020-10-21T16:37:51Z
dc.date.issued 2020
dc.identifier.other QB857.5 E96 G46 2020
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/29427
dc.description xi, 186 leaves : illustrations (chiefly colour) ; 29 cm
dc.description Includes abstract and appendices.
dc.description Includes bibliographical references (leaves 165-186).
dc.description.abstract The study of galaxy morphology can provide important information about how galaxies evolve. In this thesis, we study size and concentration of light profiles for &sim;15000 star-forming galaxies (SFGs, M<sub>&lowast;</sub><span>≳</span>10<sup>9.5</sup> M<sub><span>☉</span></sub>) and &sim;5000 massive quiescent galaxies (QGs, M<sub>&lowast;</sub><span>≳</span>10<sup>10</sup> M<sub><span>☉</span></sub>) in the COSMOS/UltraVISTA region using CLAUDS+HSC-SSP griz bands at 0.1&lt;z&lt;0.9. We find a slow evolution in the characteristic sizes of SFGs, R<sub><em>e</em></sub>&prop;(1+z)<sup>&minus;0.45</sup>, which is consistent with the growth of their bulges. In contrast, the characteristic size of QGs grows faster, R<sub><em>e</em></sub>&prop;(1+z)<sup>&minus;1.06</sup>, driven by several physical processes including progenitor bias, adiabatic expansion, and merging. Analysis of 75 cluster galaxies does not show any significant difference from the field galaxies. However, a separate analysis of &sim;130 spectroscopically confirmed members of five cluster cores from the HST CLASH survey provide evidence for the effects of the densest environments on QG size. en_CA
dc.description.provenance Submitted by Greg Hilliard (greg.hilliard@smu.ca) on 2020-10-21T16:37:51Z No. of bitstreams: 1 George_Angelo_MASTERS_2020.pdf: 13899571 bytes, checksum: 81d838df5cac4694bad286363e10e0dc (MD5) en
dc.description.provenance Made available in DSpace on 2020-10-21T16:37:51Z (GMT). No. of bitstreams: 1 George_Angelo_MASTERS_2020.pdf: 13899571 bytes, checksum: 81d838df5cac4694bad286363e10e0dc (MD5) Previous issue date: 2020-08-13 en
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QB857.5.E96
dc.subject.lcsh Galaxies -- Evolution
dc.title Evolution of galaxy morphology in the field and cluster environment since z ∼ 1 en_CA
dc.type Text en_CA
thesis.degree.name Master of Science in Astronomy
thesis.degree.level Masters
thesis.degree.discipline Astronomy and Physics
thesis.degree.grantor Saint Mary's University (Halifax, N.S.)
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