An extensive grid of mass fluxes for Galactic O stars

Abstract

A previously-described code for constructing moving reversing layers (MRL) is improved by replacing a two-parameter model for the radiative acceleration due to lines with a flexible non-parametric description, thus allowing a greater degree of dynamical consistency to be achieved in modelling turbulent transonic flow in the outer atmospheric layers of O stars. With this new code, mass fluxes J are computed at fifty-seven points in (T_eff, g)-space. Specifically, J's are computed for all Lanz-Hubeny (2003) NLTE atmospheres with T_eff (kK) \in (27.5, 55) and log g \leq 4.5. Differences with widely-used mass-loss formulae are emphasized, and opportunities for differential spectroscopic tests identified.

8 pages, 9 figure. Revised version submitted to Astronomy and Astrophysics

References in corpus (4)

• The nucleosynthesis of Al26 and Fe60 in solar metallicity stars extending in mass from 11 to 120 Msun: the hydrostatic and explosive contributions
• On the role of the WNH phase in the evolution of very massive stars: Enabling the LBV instability with feedback
• Mass fluxes for O stars
• Mass fluxes for hot stars

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• Line driven winds and the UV turnover in AGN accretion discs
• No breakdown of the radiatively-driven wind theory in low-metallicity environments
• The VLT-FLAMES Tarantula Survey. XIII: On the nature of O Vz stars in 30 Doradus
• X-ray, UV and optical analysis of supergiants: $\epsilon$ Ori
• Coronal winds powered by radiative driving
• Probing the weak wind phenomenon in Galactic O-type giants
• Demonstration of a novel method for measuring mass-loss rates for massive stars
• Spectroscopic evolution of massive stars near the main sequence at low metallicity
• Effect of scattering on the transonic solution topology and intrinsic variability of line-driven stellar winds
• O-star mass-loss rates at low metallicity
• An on-the-fly line-driven-wind iterative mass-loss estimator (LIME) for hot, massive stars of arbitrary chemical compositions
• Mass fluxes for O-type supergiants with metallicity Z = Z_{\sun}/5