Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247..173s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 1, July 1991, p. 173-182.
Astronomy and Astrophysics
Astrophysics
34
Galactic Bulge, Planetary Nebulae, Milky Way Galaxy, Star Formation, Statistical Analysis
Scientific paper
The nebular properties of a sample of about 200 planetary nebulae lying in the Galactic bulge have been studied. Similarly to what has been found on other samples of planetary nebulae, an apparent decrease of the filling factor and an increase of the ionized mass with the measured radius have been obtained. These trends are artifacts due to error propagation. By comparison with a simulation of a population of planetary nebulae including the observational errors and selection effects, it is shown that these observational diagrams are in fact entirely compatible with a population of planetary nebulae having central stars in the range 0.55-0.65 solar masses, nebular masses around 0.2 solar masses and a filling factor about 0.5. In this picture, most of the Galactic bulge planetary nebulae are density bounded.
Acker Agnés
Stasinska Grazina
Stenholm Björn
Tylenda Romuald
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