New Planetary Nebulae in the Galactic Bulge region with l>0deg - I. Discovery method and first results

Details New Planetary Nebulae in the Galactic Bulge region with l>0deg - I. Discovery method and first results New Planetary Nebulae in the Galactic Bulge region with l>0deg - I. Discovery method and first results

2002-11-05

arxiv.org/abs/astro-ph/0211078v1

Mon.Not.Roy.Astron.Soc. 339 (2003) 735

Astronomy and Astrophysics

Astrophysics

16 pages, 5 figures, accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06233.x

We present the first results of an [O III] 5007 A interference filter survey for Planetary Nebulae (PNe) in the Galactic bulge. Covering (at first) the 66 per cent of the survey area, we detected a total of 90 objects, including 25 new PNe, 57 known PNe and 8 known PNe candidates. Deep Halpha+[N II] CCD images have been obtained as well as low resolution spectra for the newly discovered PNe. Their spectral signature suggests that the detected emission originates from a photoionized nebula. In addition, absolute line fluxes have been measured and the electron densities are given. Accurate optical positions and optical diameters were also determined.

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