@inproceedings{ec26163249a44035b16c0703c3bbc7cd,
title = "A 3D view of the planetary nebula NGC 40",
abstract = "We present the results of a study of the planetary nebula NGC 40 with the use of the 3-D photoionization code Mocassin constrained by observational data of different types. The modeling process allows us to derive the three-dimensional nebular structure, physical and chemical characteristics and ionizing star parameters of the object by simultaneously fitting the integrated line intensities, the temperature map, density map, and the observed morphologies in different emission lines. For this particular case we combined hydrodynamical simulations with the photoionization scheme in order to obtain a self-consistent distribution of density and velocity of the nebular material. Finally, using theoretical evolutionary tracks of intermediate and low mass stars, we estimate the mass and age of the central star of NGC 40 as being 0.57 M-circle dot and 5810 yr, respectively. The distance obtained from the fitting procedure was 1150 +/- 170 pc.",
keywords = "planetary nebulae: individual (NGC 40), methods: numerical, 3-DIMENSIONAL PHOTOIONIZATION STRUCTURE, CHEMICAL ABUNDANCES, DISTANCES, EVOLUTION",
author = "Hektor Monteiro and Diego Falceta-Goncalves",
year = "2012",
doi = "10.1017/S1743921312011854",
language = "English",
isbn = "978-1-10701-983-6",
series = "IAU Symposium Proceedings Series",
publisher = "Cambridge University Press",
pages = "446--447",
editor = "A Manchado and L Stanghellini and D Schonberner",
booktitle = "PLANETARY NEBULAE: AN EYE TO THE FUTURE",
address = "United Kingdom",
note = "283rd Symposium of the International-Astronomical-Union ; Conference date: 25-07-2011 Through 29-07-2011",
}