The spectrum of the Be star HD 110432.
de Freitas Pacheco, J. A.; Codina, S. J.; Lopes, D. F.; Gilra, D.
Brazil, Netherlands
Abstract
The UV spectrum of HD 110432, a B0.5IIIe star, is described. The IUE spectra present broad absorption photospheric lines, very narrow absorption lines of interstellar origin and narrow absorption lines of highly ionized species (N V, C IV, and Si IV) displaced to the short wavelengths at velocities of about -1350 km s-1. The authors have estimated a rotational velocity of 360 km s-1 and the distance was calculated to be 430 pc. The asymmetric profiles of the resonance lines of Si IV and C IV suggest an expanding envelope corresponding to a mass-loss of about 3×10-9 M_sun;/y.