A novel method for the determination of the binary period distribution in globular clusters

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dc.contributor.advisor Henault-Brunet, Vincent
dc.creator Devries, Maigan Kira
dc.date.accessioned 2023-09-06T13:48:01Z
dc.date.available 2023-09-06T13:48:01Z
dc.date.issued 2023-08-01
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/31826
dc.description 1 online resource (ix, 104 pages) : colour illustrations, charts (some colour), graphs (some colour)
dc.description Includes abstract.
dc.description Includes bibliographical references (pages 100-104).
dc.description.abstract Globular cluster binaries are dynamically affected by interactions within their host cluster, leaving a signature on their orbital period distribution. As most disrupting interactions occur during the early evolution of the cluster (when the cluster is densest), the present-day intrinsic binary period distribution, in particular the hard-soft limit, can provide insight into the early cluster environment. However, constraining the period distribution is difficult due to observational biases. To overcome this, we developed a hierarchical method for fitting the period distribution. This method takes multi-epoch radial velocity data for stars in the cluster, fits the radial velocity curve for stars detected as radial velocity variable, and then uses these posterior samples to recover the intrinsic orbital period distribution. We validate the method using mock data and present the first results on the globular cluster NGC 3201. This will provide information about binaries, globular clusters, and topics such as gravitational waves. en_CA
dc.description.provenance Submitted by Greg Hilliard (greg.hilliard@smu.ca) on 2023-09-06T13:48:01Z No. of bitstreams: 1 Devries_Maigan_MASTERS_2023.pdf: 22255084 bytes, checksum: e1f28d327bda16cdcac67c60a5a6c765 (MD5) en
dc.description.provenance Made available in DSpace on 2023-09-06T13:48:01Z (GMT). No. of bitstreams: 1 Devries_Maigan_MASTERS_2023.pdf: 22255084 bytes, checksum: e1f28d327bda16cdcac67c60a5a6c765 (MD5) Previous issue date: 2023-08-30 en
dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary's University
dc.subject.lcsh Stars -- Globular clusters
dc.subject.lcsh Double stars -- Motion in line of sight
dc.subject.lcsh Double stars -- Orbits
dc.title A novel method for the determination of the binary period distribution in globular clusters 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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