Wind signatures in the X-ray emission-line profiles of the late-O supergiant Zeta Orionis
D.H. Cohen, M.A. Leutenegger, K.T. Grizzard, C.L. Reed, R.H. Kramer, and S.P. Owocki, MNRAS. 368, 1905 (2006).

Zeta Orionis is fit with gaussians and a smooth wind model.
Physical parameters and wind properties of galactic early B supergiants
P.A. Crowther, D.J. Lennon, and N.R. Walborn, A.& A. 446, 279 (2006).

Various properties of E. Ori. on page 283. Comparison of previous values on page 286.
The discordance of mass-loss estimates for galactic O-type stars
A.W. Fullerton, D.L. Massa, and R.K. Prinja, ApJ. 637, 1025 (2006).

Properties of 15 Mon, 9 Sgr, τ CMa, ζ Ori, and ξ Per.
Spektroskopie heißer Sterne der Lokalen Gruppe im ultravioletten Spektralbereich
S.M. Haser, Dissertation (1995).

Properties of O and B stars on pages 215-223.
An analysis of HST UV spectra of Cyg OB2 stars
A. Herrero, J. Puls, L.J. Corral, R.P. Kudritzki, and M.R. Villamariz, A.& A. 366, 623 (2001).

Properties for Cyg OB2-8A.
X-Ray Emission-Line Profile Modeling of O Stars: Fitting a Spherically Symmetric Analytic Wind-Shock Model to the Chandra Spectrum of Zeta Puppis
R.H. Kramer, D.H. Cohen, and S.P. Owocki, ApJ. 592, 532 (2003).

Several lines of Zeta Pup are fit with a smooth wind profile.
What are the mass-loss rates of O stars?
H.J.G.L.M. Lamers and C. Leitherer, ApJ. 412, 771 (1993).

Mass-loss rates, effective temperatures, and terminal velocities for HD 93129, 15 Mon, 9 Sgr, τ CMa, and ξ Per.
High-resolution X-ray spectroscopy of bright O-type stars
L.M. Oskinova, A. Feldmeier, and W.R. Hamann, MNRAS. 372, 313 (2006).

Overview of several stars. Includes f/i ratios and smooth/iso-clumped/aniso-clumped wind models.
Radiatively driven stellar winds from hot stars. (Encyclopedia article)
S.P. Owocki (2001).

Lots of good general information.
X-ray line proviles from parameterized emission within an accelerating stellar wind.
S.P. Owocki and D.H. Cohen, ApJ. 559, 1108 (2001).

Wind model.
Radiation-driven winds of hot luminous stars.
Improvements of the theory and first results.

A. Pauldrach, J. Puls, and R.P. Kudritzki, A.& A. 164, 86 (1986).

Various properties of E. Ori. on page 97, but cites Abbott (1980).
O-star mass-loss and wind momentum rates in the Galaxy and the Magellanic Clouds.
J. Puls, R.P. Kudritzki, A. Herrero, A.W.A Pauldrach, S.M. Haser, D.J. Lennon, R. Gabler, S.A. Voels, J.M. Vilchez, S. Wachter, and A. Feldmeier, A.& A. 305, 171 (1996).

Properties of HD 93129 and ξ Per.
Quantitative studies of the optical and UV spectra of Galactic early B supergiants. I. Fundamental parameters.
S.C. Searle et al., A.& A. 481, 777 (2008).

Various properties of E. Ori. on pages 786 and 790.

Home Log Tasks
HD 93129AB HD 93250 9 Sgr ξ Per ζ Oph ζ Ori ε Ori ι Ori
ζ Pup HD 150136 Cyg OB2-8A 15 Mon τ CMa δ Ori