Now showing items 1-4 of 753

    • The influence of planetary and stellar companions on debris discs 

      Yelverton, Ben
      Around 20% of main-sequence stars are known to host debris discs composed of planetesimals and the dust produced in their collisions. The structures of these discs can be constrained through spectral energy distribution ...
    • Galactic Archaeology with Gaia 

      Myeong, Gyuchul (2020-07-17)
      The halo of our Galaxy is believed to be mainly formed by the materials accreted/merged in the past, and so has "extragalactic" origin. Such formation process will leave dynamical traces imprinted in the halo, like stellar ...
    • Spectra and variability of accreting black holes 

      Buisson, Douglas John Keith
      In this thesis, we present various results concerning the structure of matter close to black holes when they are actively accreting. The two components (apart from the black hole itself) most relevant to this work are the ...
    • The Effect of Tidal Interactions On Hot Subdwarf B Stars and Their Pulsations 

      Preece, Holly (2020-02-22)
      Hot subdwarf B (sdB) stars are evolved core He-burning stars. The sdBs are formed by binary interactions on the red giant branch (RGB) which cause the stars to lose most of their H envelopes. Over half of all observed hot ...