The Structure and Evolution of Intermediate-Mass Stars
| dc.contributor.advisor | Reshid, Remudin (PhD) | |
| dc.contributor.author | Gezie, Dessalegn | |
| dc.date.accessioned | 2021-02-05T08:12:14Z | |
| dc.date.accessioned | 2023-11-09T11:26:19Z | |
| dc.date.available | 2021-02-05T08:12:14Z | |
| dc.date.available | 2023-11-09T11:26:19Z | |
| dc.date.issued | 2021-01-02 | |
| dc.description.abstract | We explore the structure and evolution of intermediate-mass stars. Under this, we focus on the mass-luminosity relation of the single main sequence interme diate-mass stars. We derivate the stellar structure equations and put the fundamental stellar quantities in terms of mass. After this, we derivate the lifetime of intermediate-mass stars in three nuclear burning phases and relate the stellar quantities with their lifetime. Thus we predict the relation MLR, MRR, and MTR in hydrogen core burning, hydrogen shell burning, and helium core burning. The mass-luminosity relation is in good agreement for O.Yu. Malkove observational work of the absolute MLR relation.In the effects of temperature gravity and nuclear reaction, the star’s structure was varied. To determine the final differential results of star’s structure equations, we must used the derivative of interior stars structure equations with central radius r. This allows us to compute the M, T, P, L, and R relations. Those are quantities derived from the stellar structure equations. From those equations, we have obtained the mass-luminosity relation equation and using nuclear reactions we studied the star’s mass and age relation using the simplified form of the equations. We showed the graphical relationship of Mass to Luminosity, Mass to Temperature, and Mass to Radius of stars in terms of a parameter of a nuclear burning lifetime. The lifetime equation of the star in hydrogen core burning and the mass-luminosity equation are good ways to measure the mass-luminosity relation of B-type stars. | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/24991 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Structure | en_US |
| dc.subject | Evolution | en_US |
| dc.subject | Intermediate-Mass Stars | en_US |
| dc.title | The Structure and Evolution of Intermediate-Mass Stars | en_US |
| dc.type | Thesis | en_US |