X-Ray, UV And Optical Analysis Of Supergiants: ϵ Ori

  title={X-Ray, UV And Optical Analysis Of Supergiants: ϵ Ori},
  author={Ra{\'u}l E. Puebla and D. John Hillier and Janos Zsarg'o and David H. Cohen and Maurice A. Leutenegger},
  journal={Monthly Notices of the Royal Astronomical Society},
We present a multi-wavelength (X-ray to optical) analysis, based on non-local thermodynamic equilibrium photospheric+wind models, of the B0 Ia-supergiant: $\epsilon$~Ori. The aim is to test the consistency of physical parameters, such as the mass-loss rate and CNO abundances, derived from different spectral bands. The derived mass-loss rate is $\dot{M}/\sqrt{f_\infty}\sim$1.6$\times$10$^{-6}$ M$_\odot$ yr$^{-1}$ where $f_\infty$ is the volume filling factor. However, the S IV $\lambda\lambda… 

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