On the synthesis of resonance lines in dynamical models of structured hot-star winds

摘要: We examine basic issues involved in synthesizing resonance-line profiles from 1-D, dynamical models of highly structured hot-star winds. Although these exhibit extensive variations density as well velocity, the scale length is still typically much greater than Sobolev length. The line transfer thus treated using a approach, generalized by Rybicki & Hummer (1978) to take proper account multiple resonances arising nonmonotonic velocity field. resulting reduced-lambda-matrix equation describing nonlocal coupling source function solved iteration, and are then derived formal solution integration this function. Two more approximate methods that instead use either stationary or structured, local yield qualitatively similar line-profiles, but found violate photon conservation 10% more. full results suggest such may indeed be able reproduce naturally some qualitative properties long noted observed UV profiles, discrete absorption components unsaturated lines, blue-edge variability saturated lines. However, particular do not yet produce black troughs commonly it seems other important discrepancies (e.g., acceleration time components) require development complete include rotation 2-D and/or 3-D effects.