Central Stars of Planetary Nebulae in IPHAS and SDSS
arXiv:0901.2324 · doi:10.1088/1742-6596/172/1/012033
Abstract
Space densities and birthrates of Planetary Nebulae (PNe) are highly uncertain. A large range of formation rates has been derived by different studies, which has led to contradicting ideas for the final evolutionary phases of low and intermediate mass stars. We started a project to deduce a birthrate using a sample of PNe within 2kpc. The central stars will be identified in the PNe fields by their photometric colours and then used to establish improved distance estimates. To facilitate this we have created grids of photometric colours which are used to constrain stellar parameters. Our study has concentrated on PNe in SDSS and the INT Photometric Halpha Survey (IPHAS) so far. IPHAS is a nearly complete northern galactic plane survey in Halpha, r' and i' bands. Many previously unknown PNe have been discovered with IPHAS. We investigate implications of a more complete local sample on PN birthrate estimates.
arXiv comment4 pages, 2 figures, Proceedings to 16th European WD Workshop Meeting Poster
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- The Hα surface brightness - radius relation: a robust statistical distance indicator for planetary nebulae
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- A high-mass Planetary Nebula in a Galactic Open Cluster
- Planetary Nebulae and How to Find Them: Color Identification in Big Broadband Surveys