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Photometric decomposition of NGC 6166

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dc.contributor.advisor Welch, Gary A.
dc.creator Blake, Ronald Melvin
dc.date.accessioned 2011-05-09T12:32:09Z
dc.date.available 2011-05-09T12:32:09Z
dc.date.issued 1996
dc.identifier.other QB858.7 B53 1997
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/22481
dc.description x, 117 leaves : ill. ; 28 cm.
dc.description Includes abstract.
dc.description Includes bibliographical references (leaves 96-102).
dc.description.abstract We have used CFHT observations in Cousins B and R to probe the structure of the supergiant elliptical galaxy NGC 6166 in Abell 2199. We utilize the isophotal and aperture photometry of nuclei B and C to search for evidence of dynamical interactions with the central galaxy. In addition, we have investigated the dust component of the central galaxy. The results from our photometry are consistent with the NGC 6166 system being composed of the large central cD galaxy, nucleus A, and two cluster galaxies passing through the center of the cluster. Nucleus B and C show none of the ellipticity or position angle changes, expected if these galaxies are being cannibalised. In addition, nucleus C has an average B - R = 1.75[plus-minus sign] 0.15 which is bluer than nucleus B, which has a B - R = 1.90[plus-minus sign] 0.22. The computed dust mass of the central galaxy is ~ 7.0 X 10[superscript 5] M[sun symbol] from optical absorption, and 2.7 X 10[superscript 7] M[sun symbol] from IRAS fluxes. The dust mass is high, in any event, and is more like that of a spiral galaxy. A Monte Carlo simulation shows that the tidal feature indicated by Lauer is not likely to be a projected cluster galaxy. The lack of significant structural changes in Nucleus B and C suggest a system in the early stages of merger. (Abstract shortened by UMI.)
dc.language.iso en
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcc QB858.7
dc.subject.lcsh Galaxies -- Clusters
dc.subject.lcsh Astronomical photometry
dc.subject.lcsh Elliptical galaxies
dc.subject.lcsh Spiral galaxies
dc.title Photometric decomposition of NGC 6166
dc.type Text
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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