Central Stars of Planetary Nebulae in IPHAS and SDSS

Details Central Stars of Planetary Nebulae in IPHAS and SDSS Central Stars of Planetary Nebulae in IPHAS and SDSS

2009-01-15

arxiv.org/abs/0901.2324v1

J.Phys.Conf.Ser.172:012033,2009

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 2 figures, Proceedings to 16th European WD Workshop Meeting Poster

Scientific paper

10.1088/1742-6596/172/1/012033

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.

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