Dark matter in dwarf irregular galaxies, DDO 210 and DDO 169

It has been proposed that dwarf irregular galaxies can be separated into two classes based on their formation mechanism; that they are the result of the collapse of a primordial gas cloud or that they are the product of condensation of gas in the tidal tails of interacting galaxies. Simulations of galaxy interactions indicate that one can differentiate between these two scenarios by the dark matter content, with a low dark matter content indicating a fossil tidal dwarf. The purpose of this dissertation was to explore the dark matter distribution of two dwarf irregular galaxies using optical and neutral atomic hydrogen data. For DDO 210, the method of mass-modelling was used to determine its dark matter. About 64% of the galaxy mass was calculated to be in the form of dark matter and hence it is unlikely to be a fossil tidal dwarf. The method of mass-modelling could not be used for DDO 169 as the galaxy shows evidence of being tidally disrupted and hence, has a disturbed velocity field. Instead, the suggestion that dark matter might be responsible for a pressure anomaly in DDO 169 was tested to determine its dark matter content. According to this method, a pressure anomaly does exist but without a concrete value for the scale-height, it is unclear whether the anomaly is due to the presence of dark matter. Hence one cannot say how much dark matter might actually be present in DDO 169. A rotation curve would be required to do this. ^

Dark Teens and Dangerous Nature- Neopagan Narratives of Cultural Marginalization

Sarah M. Pike, Professor of Comparative Religion and Director of the Humanities Center at California State University, Chico, presents a lecture on the subject of projections of both evil and witchcraft on young adults. Lecture held at the Green Library, Modesto Maidique Campus, Florida International University on September 30, 2014.

Reconcilable differences, a dark comedy

Reconcilable Differences is the story of Miami radio host Adam Painter. Confused about relationships, Adam cancels his wedding and, under the guidance of his bad-boy best friend, delves into the demi-monde inhabited by strippers and hookers. On the air he begins to examine how men and women interact. Adam explores the night world, moving from a connection with its denizens through his talk show to direct experience of its license and loneliness. He fails miserably in his clumsy efforts with women and is fired, sued and arrested. An unlikely, unwilling rebel, Adam confronts change and stumbles almost truculently toward self-discovery. This picaresque novel is told in the third person closely attached to the protagonist. The time scheme covers a thirteen-week radio ratings period. The story encompasses the worlds of radio and the sex industry, using South Florida settings to re-inforce character, plot and theme.