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Determination of the mass distribution in the Galactic centre from the stellar motions
dc.contributor.advisorŠubr, Ladislav
dc.creatorSchovancová, Jaroslava
dc.date.accessioned2017-04-06T09:19:07Z
dc.date.available2017-04-06T09:19:07Z
dc.date.issued2007
dc.identifier.urihttp://hdl.handle.net/20.500.11956/12623
dc.description.abstractWe present an implementation of the statistical approach to the stars-gas mass exchange cycle into an N-body code. First, we summarize available data on stellar mass-loss and derive the time-dependency of the mass-loss rate of a single stellar population. Since the adopted probabilistic scheme that served as a basis for our implementation was limited to the linear star formation law while observations seem to suggest a non-linearity, we derive the non-linear star formation scheme. Both sides of the mass exchange cycle are then implemented into the code with stellar and gaseous particles and compared with an analytic recipe to test their reliability. In the next step, the comparison of such an extended statistical approach with deterministic scheme is performed for a fully dynamical model. The aim of the comparison is to explore divergence between both models of different natures. As an illustration of the code application and sensitivity of the resulting galaxy disk dynamics, several comparisons with varying the key parameters are performed.en_US
dc.languageČeštinacs_CZ
dc.language.isocs_CZ
dc.publisherUniverzita Karlova, Matematicko-fyzikální fakultacs_CZ
dc.titleUrčování rozložení hmoty v jádře Galaxie z pohybů hvězdcs_CZ
dc.typediplomová prácecs_CZ
dcterms.created2007
dcterms.dateAccepted2007-09-24
dc.description.departmentAstronomický ústav UKcs_CZ
dc.description.departmentAstronomical Institute of Charles Universityen_US
dc.description.facultyFaculty of Mathematics and Physicsen_US
dc.description.facultyMatematicko-fyzikální fakultacs_CZ
dc.identifier.repId42868
dc.title.translatedDetermination of the mass distribution in the Galactic centre from the stellar motionsen_US
dc.contributor.refereeMayer, Pavel
dc.identifier.aleph000834032
thesis.degree.nameMgr.
thesis.degree.levelmagisterskécs_CZ
thesis.degree.disciplineAstronomie a astrofyzikacs_CZ
thesis.degree.disciplineAstronomy and astrophysicsen_US
thesis.degree.programPhysicsen_US
thesis.degree.programFyzikacs_CZ
uk.thesis.typediplomová prácecs_CZ
uk.taxonomy.organization-csMatematicko-fyzikální fakulta::Astronomický ústav UKcs_CZ
uk.taxonomy.organization-enFaculty of Mathematics and Physics::Astronomical Institute of Charles Universityen_US
uk.faculty-name.csMatematicko-fyzikální fakultacs_CZ
uk.faculty-name.enFaculty of Mathematics and Physicsen_US
uk.faculty-abbr.csMFFcs_CZ
uk.degree-discipline.csAstronomie a astrofyzikacs_CZ
uk.degree-discipline.enAstronomy and astrophysicsen_US
uk.degree-program.csFyzikacs_CZ
uk.degree-program.enPhysicsen_US
thesis.grade.csVýborněcs_CZ
thesis.grade.enExcellenten_US
uk.abstract.enWe present an implementation of the statistical approach to the stars-gas mass exchange cycle into an N-body code. First, we summarize available data on stellar mass-loss and derive the time-dependency of the mass-loss rate of a single stellar population. Since the adopted probabilistic scheme that served as a basis for our implementation was limited to the linear star formation law while observations seem to suggest a non-linearity, we derive the non-linear star formation scheme. Both sides of the mass exchange cycle are then implemented into the code with stellar and gaseous particles and compared with an analytic recipe to test their reliability. In the next step, the comparison of such an extended statistical approach with deterministic scheme is performed for a fully dynamical model. The aim of the comparison is to explore divergence between both models of different natures. As an illustration of the code application and sensitivity of the resulting galaxy disk dynamics, several comparisons with varying the key parameters are performed.en_US
uk.publication.placePrahacs_CZ
uk.grantorUniverzita Karlova, Matematicko-fyzikální fakulta, Astronomický ústav UKcs_CZ


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