![]() For the ionizing fluxes we computed a grid of stellar spectral energy distributions (SEDs) from detailed, fully non-LTE model atmospheres that include the effects of stellar winds and line blocking and blanketing. We systematically explore a plausible subset of the parameter space involving effective temperatures and metallicities of the ionizing sources, the effects of the hardening of their radiation by surrounding “leaky” H II regions with different escape fractions, as well as different scenarios for the clumpiness of the DIG, and compute the resulting line strength ratios for a number of diagnostic optical emission lines. Key to understanding the ionization mechanisms in the DIG is the line emission by the ionized gas.Īims. ![]() Institut für Astronomie und Astrophysik der Ludwig-Maximilians-Universität München,Į-mail: The diffuse ionized gas (DIG) constitutes the largest fraction of the total ionized interstellar matter in star-forming galaxies, but it is still unclear whether the ionization is driven predominantly by the ionizing radiation of hot massive stars, as in H II regions, or whether additional sources of ionization have to be considered. Astronomical objects: linking to databases. ![]() Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes With no memory of the murder, Callahan soon realises that the only way to get rid of Sean is to help him dig. Plot : After serving fifteen years for murder, Callahan returns home to find Sean, his victim’s father, searching for the body. Stars : Moe Dunford, Francis Magee, Emily Taaffe, Lorcan Cranitch
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