Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002rmxac..12..170m&link_type=abstract
Ionized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert, Mexico City
Astronomy and Astrophysics
Astronomy
2
Circumstellar Matter, Dust, Extinction, Methods: Numerical, Planetary Nebulae: Individual (V605 Aql)
Scientific paper
To determine the 3-dimensional distribution of matter that produces the observed morphologies in planetary nebulae (PNe) is essential in understanding the gas ejection mechanisms that form these objects, giving also important constraints for stellar evolution theories. Monteiro et al. (2000) showed that ellipsoidal geometry, usually adopted in the literature for the typical annular PN NGC 3132, is not able to consistently reproduce the density and velocity profiles. It was also shown that a Diabolo structure reproduced these aspects. However, in order to obtain a consistent model, more detailed observations are needed. We then performed spatially resolved observations in the 1.6-m telescope of the Laboratorio Nacional de Astrofisica (LNA, Brazil). Using these observations (images, total line intensities, etc.), a 3-dimensional photoionization code and the Diabolo structure, characteristic parameters for the gas and the central star were obtained.
Gruenwald Ruth
Monteiro Hektor
Morisset Charles
Viegas M. M. S.
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