Atmospheric parameters and rotational velocities for a sample of Galactic B‐type supergiants

  title={Atmospheric parameters and rotational velocities for a sample of Galactic B‐type supergiants},
  author={Morgan Fraser and P. L. Dufton and Ian Hunter and Research Institute of Physics and Astronomy and Queen's University of Belfast},
  journal={Monthly Notices of the Royal Astronomical Society},
High-resolution optical spectra of 57 Galactic B-type supergiant stars have been analysed to determine their rotational and macroturbulent velocities. In addition, their atmospheric parameters (effective temperature, surface gravity and microturbulent velocity) and surface nitrogen abundances have been estimated using a non-local thermodynamic equilibrium grid of model atmospheres. Comparisons of the projected rotational velocities have been made with the predictions of stellar evolutionary… Expand
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