Physics & Astronomy: Recent submissions

Now showing items 256-260 of 659

    • The stability of particle-like solutions of some non-linear field equations 

      Anderson, David Lessells Thomson (University of St Andrews, 1969) - Thesis
      The object of this thesis is to examine the stability of particle-like solutions of the nonlinear field equation ▽²Ψ - 1/c² δ²Ψ/δt² = K²Ψ –μ² ΨΨ*Ψ+λ(ΨΨ*)²Ψ with the particular form of time-dependence Ψ = φ (r) e ...

    • A spectroscopic investigation of the hydro-deficient binary Upsilon Sgr, and related objects 

      Dudley, Richard E. (University of St Andrews, 1992) - Thesis
      The bright hydrogen-deficient binary Upsilon Sgr has been studied in detail in the areas of radial velocities, flux distribution, temperature, surface gravity, composition and mass loss using the analysis of spectroscopic ...

    • Photospheric parameters of early-type stars 

      Stewart, Gordon C. (University of St Andrews, 1984) - Thesis
      The development of an interactive data reduction and analysis system for astronomical spectra written in the FORTH computing language and operated on the Nova 820 minicomputer at the University Observatory, St. Andrews is ...

    • A spectroscopic study of some early-type emission-line stars 

      Jarad, Majeed M. (University of St Andrews, 1986) - Thesis
      Spectroscopic observations of 18 of the brighter Be and 0e stars in the Northern Hemisphere have been presented in this project. About 900 spectrograms were secured and measured using the more objective numerical technique ...

    • The calculation of stellar opacity 

      Hollingsworth, Helen M. (University of St Andrews, 1966) - Thesis