1997/12/05 by Cohen, David H., Hurwitz, Mark, Cassinelli, Joseph P. +1
#Astrophysics (astro-ph) #FOS: Physical sciences
paper · doi:10.48550/arxiv.astro-ph/9712093
We report on extreme-ultraviolet (EUV) spectroscopic observations of the B bright giant epsilon Canis Majoris made during the ORFEUS-SPAS II mission. We assess the performance of the instrument in the EUV and find that the effective area is roughly 3 times that of the Extreme-Ultraviolet Explorer (EUVE) long-wavelength spectrometer and that the spectral resolution is lambda/Delta(lambda) = 1250. We identify most of the features, qualitatively compare different models, and examine the wind-broadened O V and Si IV lines, which display blue edge velocities up to 800 km/s.