Modelling and Distance Determination of Planetary Nebulae

Details Modelling and Distance Determination of Planetary Nebulae Modelling and Distance Determination of Planetary Nebulae

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..579v&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 579-580

Astronomy and Astrophysics

Astrophysics

2

Planetary Nebulae, Distance Determination, Photo-Ionization Modelling

Scientific paper

At present the lack of a good, generally accepted distance scale is the major limitation in the study of Planetary Nebula (PN) evolution and their distribution. We describe our fully self-consistent method to derive the physical parameters of a PN, including its distance, from a set of observables. For this we calculate various models and search for a best fit of the model predictions to the observables. An accurate determination of the angular diameter is important for a good distance determination. We think that we shall achieve an accuracy of 30% in distance. We estimate the error in stellar temperature at less than 15% and the uncertainty in the abundances at 0.10 dex.

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