alpha line. Juan Nicolás Garavito-Camargo¹. Jaime e. Forero-Romero¹. Mark Dijkstra². ¹Universidad de los Andes. ²Oslo University. EWASS 2014 Geneva, Switzerland 1
Does rotation have any impact in the morphology of the Lyman alpha line? Make a systematic study of the impact of rotation in the Lyman-alpha line morphology. If it does, what morphological Features are affected?
morphology; the width and the relative intensity of the peaks and the center of the lines are affected. For high velocities the line becomes single peaked. • The width of the line (FWHM) increases with rotational velocity. FWHM2 = FWHM 0 2 + (Vmax/γ)2 • Rotation induces an anisotropy for different viewing angles, viewing angles close to the pole the line are double peaked and the line makes a transition to single peaked for viewing angles along the equator. • We derive an approximate expression for the spectra, assuming a functional form for the surface brightness profiles I(μ). This solution agrees with our simulated models. 17