# Planetary Nebulae: Observational Properties, Mimics and Diagnostics

@article{Frew2010PlanetaryNO,
title={Planetary Nebulae: Observational Properties, Mimics and Diagnostics},
author={David J. Frew and Quentin A. Parker},
journal={Publications of the Astronomical Society of Australia},
year={2010},
volume={27},
pages={129 - 148}
}
• Published 8 February 2010
• Physics
• Publications of the Astronomical Society of Australia
Abstract The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago. The new discoveries are a legacy of the recent availability of wide field, narrowband imaging surveys, primarily in the light of H-alpha. In this paper, we summarise the various PN discovery techniques, and give an overview of the many types of objects which mimic PN and which appear as contaminants in both Galactic and extragalactic…
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