Contribution
Shock induced starformation in the outer filament of Centaurus A
Presenter: Simon Ellis (University of Sydney)
Abstract: I will present new deep narrow band [N ii] and Hα imaging of the NE region of Centaurus A obtained with the Maryland-Magellan Tunable Filter. I will show evidence for a gradient in the [N ii] / Hα ratio along the filament, with the ratio increasing with distance away from the galaxy. We interpret this result in the context of jet-driven shock induced star-formation. The distant regions, show signs of an ongoing shock; the nearer regions show evidence of young stars formed by the passing shock in the recent past.