P-Cyg profiles observed in the ultraviolet and visible spectra of Wolf-Rayet stars.
Willis, A. J.
United Kingdom
Abstract
A semi-qualitative analysis of the UV P-Cygni line profiles observed in the IUE spectra of seven WN and three WC Wolf-Rayet stars is presented. The velocity characteristics of these profiles are presented and combined with complementary measurements from visible spectra, allowing an inspection of P-Cygni profiles encompassing a wide range of ionic IPs and transition EPs for each star. The observed velocities are inspected for trends with these atomic parameters, and the trends found for each star are compared as a function of subclass in the WN and WC sequences.