{"id":{"repo_id":"cent-lancashire","oai_identifier":"oai:clok.uclan.ac.uk:11160"},"canonical_url":"https://search.dev.ndltd.org/etd/cent-lancashire/oai:clok.uclan.ac.uk:11160","repository":{"repo_id":"cent-lancashire","name":"University of Central Lancashire","base_url":"https://clok.uclan.ac.uk/cgi/oai2"},"display":{"title":"Made-to-measure Modelling of Nuclear Star Clusters","abstract":"The nuclear star clusters of late-type spiral galaxies are comprised of multiple components. Gemini near-infrared spectroscopy of the nuclear star cluster in NGC 4244 shows clear rotation. Earlier, De Lorenzi et al. (2013) constructed two component (disc + spheroid) axisymmetric three integral particle models of NGC 4244, finding a negative vertical anisotropy (βz < 0). We construct a series of axisymmetric, single-component, particle models of NGC 4244 using these data, combined with F814W band photometric data from the Hubble space telescope and the χ2-made-to-measure code NMAGIC. We find a best fitting central black hole mass of 5 x 105 M⊙ . Our models also have a negative βz, as in earlier models. We conclude that although the disc component of NGC 4244’s nuclear star cluster is clearly present, it has a negligible effect on the measured kinematics. We also present a preliminary density model for the nuclear star cluster residing in the pure spiral galaxy M33.","abstract_html":"The nuclear star clusters of late-type spiral galaxies are comprised of multiple components. Gemini near-infrared spectroscopy of the nuclear star cluster in NGC 4244 shows clear rotation. Earlier, De Lorenzi et al. (2013) constructed two component (disc + spheroid) axisymmetric three integral particle models of NGC 4244, finding a negative vertical anisotropy (βz &lt; 0). We construct a series of axisymmetric, single-component, particle models of NGC 4244 using these data, combined with F814W band photometric data from the Hubble space telescope and the χ2-made-to-measure code NMAGIC. We find a best fitting central black hole mass of 5 x 105 M⊙ . Our models also have a negative βz, as in earlier models. We conclude that although the disc component of NGC 4244’s nuclear star cluster is clearly present, it has a negligible effect on the measured kinematics. We also present a preliminary density model for the nuclear star cluster residing in the pure spiral galaxy M33.","abstract_has_math":false,"creators":["Earp, Samuel"],"institution":"University of Central Lancashire","degree_name":"msc","degree_level":"masters","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-09","date_published":"2014-09","updated_at":"2026-07-24T01:35:49Z","subjects":["F500 - Astronomy"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Earp, Samuel"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-09"]},{"key":"dc:date.issued","label":"Date","values":["2014-09"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["School of Computing and Physical Sciences"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Central Lancashire"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://knowledge.lancashire.ac.uk/id/eprint/11160/"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["msc"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["F500 - Astronomy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://knowledge.lancashire.ac.uk/id/eprint/11160/1/Earp%20Samuel%20e-Thesis%20Submission%20Form.doc","https://knowledge.lancashire.ac.uk/id/eprint/11160/2/Earp%20Samuel%20Final%20e-Thesis%20%28Master%20Copy%29.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The nuclear star clusters of late-type spiral galaxies are comprised of multiple components. Gemini near-infrared spectroscopy of the nuclear star cluster in NGC 4244 shows clear rotation. Earlier, De Lorenzi et al. (2013) constructed two component (disc + spheroid) axisymmetric three integral particle models of NGC 4244, finding a negative vertical anisotropy (βz < 0). We construct a series of axisymmetric, single-component, particle models of NGC 4244 using these data, combined with F814W band photometric data from the Hubble space telescope and the χ2-made-to-measure code NMAGIC. We find a best fitting central black hole mass of 5 x 105 M⊙ . Our models also have a negative βz, as in earlier models. We conclude that although the disc component of NGC 4244’s nuclear star cluster is clearly present, it has a negligible effect on the measured kinematics. We also present a preliminary density model for the nuclear star cluster residing in the pure spiral galaxy M33."]},{"key":"dc:format","label":"Dc Format","values":["application/msword","application/pdf"]},{"key":"dc:title","label":"Title","values":["Made-to-measure Modelling of Nuclear Star Clusters"]}]}],"canonical_facts":{"dc:creator":["Earp, Samuel"],"dc:date":["2014-09"],"dc:date.issued":["2014-09"],"dc:description.abstract":["The nuclear star clusters of late-type spiral galaxies are comprised of multiple components. Gemini near-infrared spectroscopy of the nuclear star cluster in NGC 4244 shows clear rotation. Earlier, De Lorenzi et al. (2013) constructed two component (disc + spheroid) axisymmetric three integral particle models of NGC 4244, finding a negative vertical anisotropy (βz < 0). We construct a series of axisymmetric, single-component, particle models of NGC 4244 using these data, combined with F814W band photometric data from the Hubble space telescope and the χ2-made-to-measure code NMAGIC. We find a best fitting central black hole mass of 5 x 105 M⊙ . Our models also have a negative βz, as in earlier models. We conclude that although the disc component of NGC 4244’s nuclear star cluster is clearly present, it has a negligible effect on the measured kinematics. We also present a preliminary density model for the nuclear star cluster residing in the pure spiral galaxy M33."],"dc:format":["application/msword","application/pdf"],"dc:identifier.uri":["https://knowledge.lancashire.ac.uk/id/eprint/11160/1/Earp%20Samuel%20e-Thesis%20Submission%20Form.doc","https://knowledge.lancashire.ac.uk/id/eprint/11160/2/Earp%20Samuel%20Final%20e-Thesis%20%28Master%20Copy%29.pdf"],"dc:language":["en"],"dc:publisher.department":["School of Computing and Physical Sciences"],"dc:publisher.institution":["University of Central Lancashire"],"dc:relation.isreferencedby":["https://knowledge.lancashire.ac.uk/id/eprint/11160/"],"dc:subject":["F500 - Astronomy"],"dc:title":["Made-to-measure Modelling of Nuclear Star Clusters"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["masters"],"dc:type.qualificationname":["msc"]},"updated_at":"2026-07-24T01:35:49Z"}