Stefan Kimeswenger: Planetary Nebulae – just ´nice to look at´ species in sky or specialized laboratories?
Planetary nebulae – in fact the historically grown name is already misleading – are a very special laboratory in space. Although the `textbook` model of the colliding two wind system proposed by Sun Kwok 1978 is still the basis of our understanding, deeper insights show, that it can`t work that simple.
Their special position with optical thickness around unity, positioning them thus between the optically thick stellar atmosphere and the optically thin ISM regime, makes modelling surprisingly difficult. The talk will present the state of the research, recent small works providing new pieces to the overall puzzle image, and ideas for next steps and research thesis’s.
Instituto de Astronomia
Jueves 05 de Diciembre 2013