The ellipticity of M31 globular clusters

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dc.contributor.authorMarkle, Laura Marieen_US
dc.date.accessioned2024-08-14T22:37:56Z
dc.date.available2024-08-14T22:37:56Z
dc.date.copyright1989en_US
dc.date.issued1989
dc.degree.departmentDepartment of Physics and Astronomy
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractThe ellipticity and orientation of seventeen globular clusters associated with the Andromeda Nebula (M31) have been measured using an isophotal method and a moment method. The measured ellipticities range from 0.024 to 0.212 with a mean value of 0.097 ± 0.017 No ellipticity variation is observed for these clusters. The M31 globular clusters are flatter than those associated with the Milky Way but their ellipticity distribution resembles that of the Large Magellanic Cloud globulars. The mechanism flattening the M31 globular clusters appears to be axial rotation of a size exceeding that of the Galactic globulars and/or anisotropic velocities of the cluster stars.
dc.format.extent128 pages
dc.identifier.urihttps://hdl.handle.net/1828/18851
dc.rightsAvailable to the World Wide Weben_US
dc.titleThe ellipticity of M31 globular clustersen_US
dc.typeThesisen_US

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