The H surface brightness radius plane as a diagnostic tool for photoionized nebulae
arXiv:1603.00983 · doi:10.1088/1742-6596/728/3/032015
Abstract
The H surface brightness radius () relation is a robust distance indicator for planetary nebulae (PNe), further enhanced by different populations of PNe having distinct loci in space. Other types of photoionized nebulae also plot in quite distinct regions in the plane, allowing its use as a diagnostic tool. In particular, the nova shells and massive star ejecta (MSE) plot on relatively tight loci illustrating their evolutionary sequences. For the MSE, there is potential to develop a distance indicator for these objects, based on their trend in space. As high-resolution, narrowband surveys of the nearest galaxies become more commonplace, the plane is a potentially useful diagnostic tool to help identify the various ionized nebulae in these systems.
4 pages, 2 figures. To appear in the proceedings of the 11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution, held in Hong Kong, Dec 2015
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