Radial and nonradial oscillations in stars with gravitational potential perturbation

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2003

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Özel, Nesibe

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In this study, the linear adiabatic radial and nonradial oscillations of evolutionary stellar model with 1.80M©, representing the star VI 162 Ori, has been investigated. The already working oscillation program with Cowling approximation, which ig nores the Eulerian perturbation in gravitational potential, has been modified to carry out the radial and nonradial linear adiabatic perturbations of stellar mod els using the Eulerian perturbation in gravitational potential. The new set of equations were solved without Cowling approximation. In the last part, the calculated oscillation frequencies with and without Cowl ing approximation have been compared with the observed frequency spectrum of the variable 5-Scuti star V1162 Ori.

Subject Keywords

Variable stars, Stellar evolution, Oscillations, Variable stars, VI 162 Ori

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http://etd.lib.metu.edu.tr/upload/1252931/index.pdf
https://hdl.handle.net/11511/13626

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

N. Özel, “Radial and nonradial oscillations in stars with gravitational potential perturbation,” M.S. - Master of Science, Middle East Technical University, 2003.