The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities

Details The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..161b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, July 1, 1987, p. 161-183.

Statistics

Computation

80

Computational Astrophysics, Electron Density (Concentration), Magellanic Clouds, Mass Distribution, Oxygen Spectra, Planetary Nebulae, Astronomical Spectroscopy, H Beta Line, Interstellar Extinction, Optical Thickness

Scientific paper

Spectrophotometric data, including [O II] 3726, 3729 Å doublet ratios, are presented for 32 planetary nebulae (PN) in the Magellanic Clouds. It is argued that the electron densities derived from these ratios provide a much better diagnostic for the determination of nebular masses than previously assumed. The optically thick PN are found to all have electron densities greater than 6000 cm-3, while the optically thin PN all have electron densities below 5000 cm-3. The optically thin PN show a range of only a factor of 2.0 in their derived masses, and have a mean ionized mass of 0.27±0.06 M_sun;. The absolute Hβ fluxes of the optically thick nebulae show a range of only a factor of 1.8. The application of these results to Galactic PN would yield distances which are generally larger than those previously estimated. A method of distance determination is proposed for optically thin PN that uses integrated nebular [O II] electron densities rather than angular diameters.

Affiliated with

Also associated with

No associations

Rating

The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The determination of the masses of Magellanic Cloud planetary nebulae using forbidden O II doublet ratio electron densities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-791526