Lyman-Alpha Emission from Galaxies

摘要: We use new models of stellar population synthesis to compute the Lyα emission from galaxies with different star formation histories and initial mass functions. The include all phases evolution recent advances in theories interiors atmospheres. find that dust-free would have equivalent widths 50-200 A, i.e., significantly higher than previous estimates, except a few times 10 7 9 yr after burst formation. also consider several other factors can affect observed emission: contributions by supernova remnants active galactic nuclei, orientation galaxy, absorption dust