The nearest star of spectral type O3: a component of the multiple system HD 150136

@article{Niemela2005TheNS,
  title={The nearest star of spectral type O3: a component of the multiple system HD 150136},
  author={Virpi S. Niemela and R. C. Gamen},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2005},
  volume={356},
  pages={974-978}
}
  • V. Niemela, R. Gamen
  • Published 19 October 2004
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
From radial velocities determined in high signal-to-noise digital spectra, we report the discovery that the brightest component of the binary system HD 150136 is of spectral type 03. We also present the first double-lined orbital solution for this binary. Our radial velocities confirm the previously published spectroscopic orbital period of 2.6 d. He II absorptions appear double at quadratures, but single lines of N v and N IV visible in our spectra define a radial velocity orbit of higher semi… 

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