The Effective Temperatures of O-type Stars from UV spectroscopy
arXiv:1308.3120 · doi:10.1016/j.asr.2013.08.009
Abstract
We present an analysis of high resolution spectra in the far-UV -- UV range (~905-2000Å) with non-LTE, spherical, hydrodynamical, line-blanketed models, of three O-type Galactic stars, and derive their photospheric and wind parameters. These data extend previously analyzed samples and fill a gap in spectral type coverage. The combined sample confirms a revised (downward) effective temperature scale with respect to canonical calibrations, as found in our previous works from UV and optical spectra, and in recent works by other authors.
Accepted for publication in Advances in Space Research. 19 pages, 5 figures
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