dc.contributor.advisor | Šubr, Ladislav | |
dc.creator | Schovancová, Jaroslava | |
dc.date.accessioned | 2017-04-06T09:19:07Z | |
dc.date.available | 2017-04-06T09:19:07Z | |
dc.date.issued | 2007 | |
dc.identifier.uri | http://hdl.handle.net/20.500.11956/12623 | |
dc.description.abstract | We 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.language | Čeština | cs_CZ |
dc.language.iso | cs_CZ | |
dc.publisher | Univerzita Karlova, Matematicko-fyzikální fakulta | cs_CZ |
dc.title | Určování rozložení hmoty v jádře Galaxie z pohybů hvězd | cs_CZ |
dc.type | diplomová práce | cs_CZ |
dcterms.created | 2007 | |
dcterms.dateAccepted | 2007-09-24 | |
dc.description.department | Astronomický ústav UK | cs_CZ |
dc.description.department | Astronomical Institute of Charles University | en_US |
dc.description.faculty | Faculty of Mathematics and Physics | en_US |
dc.description.faculty | Matematicko-fyzikální fakulta | cs_CZ |
dc.identifier.repId | 42868 | |
dc.title.translated | Determination of the mass distribution in the Galactic centre from the stellar motions | en_US |
dc.contributor.referee | Mayer, Pavel | |
dc.identifier.aleph | 000834032 | |
thesis.degree.name | Mgr. | |
thesis.degree.level | magisterské | cs_CZ |
thesis.degree.discipline | Astronomie a astrofyzika | cs_CZ |
thesis.degree.discipline | Astronomy and astrophysics | en_US |
thesis.degree.program | Physics | en_US |
thesis.degree.program | Fyzika | cs_CZ |
uk.thesis.type | diplomová práce | cs_CZ |
uk.taxonomy.organization-cs | Matematicko-fyzikální fakulta::Astronomický ústav UK | cs_CZ |
uk.taxonomy.organization-en | Faculty of Mathematics and Physics::Astronomical Institute of Charles University | en_US |
uk.faculty-name.cs | Matematicko-fyzikální fakulta | cs_CZ |
uk.faculty-name.en | Faculty of Mathematics and Physics | en_US |
uk.faculty-abbr.cs | MFF | cs_CZ |
uk.degree-discipline.cs | Astronomie a astrofyzika | cs_CZ |
uk.degree-discipline.en | Astronomy and astrophysics | en_US |
uk.degree-program.cs | Fyzika | cs_CZ |
uk.degree-program.en | Physics | en_US |
thesis.grade.cs | Výborně | cs_CZ |
thesis.grade.en | Excellent | en_US |
uk.abstract.en | We 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.place | Praha | cs_CZ |
uk.grantor | Univerzita Karlova, Matematicko-fyzikální fakulta, Astronomický ústav UK | cs_CZ |
dc.identifier.lisID | 990008340320106986 | |