Open AccessNew planetary nebulae in the Galactic bulge region with l > 0°– I. Discovery method and first results
Author(s) -
Boumis P.,
Paleologou E. V.,
Mavromatakis F.,
Papamastorakis J.
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06233.x
Subject(s) - planetary nebula , physics , bulge , astrophysics , doubly ionized oxygen , nebula , interference filter , astronomy , line (geometry) , spectral line , emission spectrum , spectral resolution , stars , optics , wavelength , geometry , mathematics
We present the first results of an [O iii ] 5007 Å 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 eight known PNe candidates. Deep Hα+[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 have also been determined.