The effective temperatures of O-type stars from UV spectroscopy |
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| Authors: | Luciana Bianchi Miriam Garcia |
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| Institution: | 1. The Johns Hopkins University, Dept. of Physics and Astronomy, 3400 N. Charles St., Baltimore, MD 21218, USA;2. Dept. of Astrophysics, CSIC-INTA Center for Astrobiology, Ctra. Torrejon a Ajalvir km. 4, 28850 Madrid, Spain |
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| Abstract: | We present an analysis of high resolution spectra in the far-UV – UV range (∼905–2000 Å) 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) Teff scale with respect to canonical calibrations, as found in our previous works from UV and optical spectra, and in recent works by other authors. |
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| Keywords: | Stars: fundamental parameters Stars: mass loss Stars: early-type Stars: winds Outflows Ultraviolet: stars |
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