The Planetary Nebulae Populations in the Local Group
arXiv:1407.2549 · doi:10.1007/978-3-319-10614-4_29
Abstract
Planetary nebulae have been used as tracers of light and kinematics for the stellar populations in early-type galaxies since more than twenty years. Several empirical properties have surfaced: for example the invariant bright cut-off of the planetary nebulae luminosity function and correlations of the luminosity specific PN number with the integrated properties of the parent stellar populations. These observed properties are poorly understood in terms of a simple model of a ionized nebula expanding around a non-evolving central star. In order to make further steps, we need to study self-contained systems at know distances whose PN populations are sufficiently nearby to permit investigation into their physical properties. The galaxies in the Local Group represent a valid proxies to study these late phases of evolved stellar populations with a spread of metallicities, -element enhancements, and star forming histories.
10 pages, 5 figures. To appear in "Lessons from the Local Group - A Conference in Honour of David Block and Bruce Elmegreen" (eds. Freeman, K.C., Elmegreen, B.G., Block, D.L. \& Woolway, M., SPRINGER: NEW YORK)
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