Spectroscopic and structural properties of galaxies in a cluster environment 5.3 billion years ago

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dc.contributor.advisor Damjanov, Ivana
dc.creator Ridgeway, George E.A.
dc.date.accessioned 2023-09-11T15:21:25Z
dc.date.available 2023-09-11T15:21:25Z
dc.date.issued 2023-08-09
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/31831
dc.description 1 online resource (xii, 164 pages) : illustrations (some colour), charts (some colour), graphs (some colour)
dc.description Includes abstract and appendix.
dc.description Includes bibliographical references (pages 138-164).
dc.description.abstract We study how environment affects the structural and spectroscopic properties of galaxies in a massive merging cluster at &zeta; = 0.53. We obtain follow up spectroscopic observations of the cluster, originally identified in the HectoMAP survey, and confirm an additional 25 galaxies as cluster members (increasing cluster membership by 78%). We calculate <em>D&eta;</em>4000, a proxy for galaxy stellar population age, for all cluster members. We perform a statistical correction using photometric cluster member candidates to account for missing spectroscopic members. We analyze the <em>D&eta;</em>4000 - clustercentric distance relation of the cluster and find that galaxies at all clustercentric distances have similarly aged stellar populations, implying a mixture of star forming and quiescent galaxies at all cluster radii. Using available measurements, we examine the size-stellar mass relation to find that non-star-forming cluster members and member candidates with log<sub>10</sub>(<em>M</em><sub>&lowast;</sub>/<em>M</em><sub>⊙</sub>) &gt; 10.5 are, on average, larger in the cluster environment than in the field. en_CA
dc.description.provenance Submitted by Greg Hilliard (greg.hilliard@smu.ca) on 2023-09-11T15:21:24Z No. of bitstreams: 1 Ridgeway_George_MASTERS_2023.pdf: 97993995 bytes, checksum: e1e674956e46fdc2c7d2d86987f3ebd3 (MD5) en
dc.description.provenance Made available in DSpace on 2023-09-11T15:21:25Z (GMT). No. of bitstreams: 1 Ridgeway_George_MASTERS_2023.pdf: 97993995 bytes, checksum: e1e674956e46fdc2c7d2d86987f3ebd3 (MD5) Previous issue date: 2023-08-09 en
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcsh Galaxies -- Clusters
dc.subject.lcsh Astronomical spectroscopy
dc.subject.lcsh Galaxy mergers
dc.subject.lcsh Stars -- Populations
dc.subject.lcsh Stars -- Masses
dc.title Spectroscopic and structural properties of galaxies in a cluster environment 5.3 billion years ago 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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