An extensive grid of mass fluxes for Galactic O stars

作者：Lucy L B^*

来源：Astronomy & Astrophysics, 2010, 524: A41.

DOI：10.1051/0004-6361/201014784

• stars: early-type
• stars: mass-loss
• stars: winds, outflows

A previously-described code for constructing moving reversing layers (MRL) is improved by replacing a two-parameter model for gl(v), the radiative acceleration due to lines, with a flexible non-parametric description, thus allowing a greater degree of dynamical consistency 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 (kappa K) epsilon (27.5, 55) and log g (cm s(-2)) = 4.5. Differences with widely-used mass-loss formulae are emphasized, and opportunities for differential spectroscopic tests identified.

• 出版日期2010-12