A 3D view of the planetary nebula NGC 40

Hektor Monteiro*, Diego Falceta-Goncalves

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationPLANETARY NEBULAE: AN EYE TO THE FUTURE
EditorsA Manchado, L Stanghellini, D Schonberner
Place of PublicationCAMBRIDGE
PublisherCambridge University Press
Pages446-447
Number of pages2
ISBN (Print)978-1-10701-983-6
DOIs
Publication statusPublished - 2012
Event283rd Symposium of the International-Astronomical-Union - Puerto de la Cruz, Spain
Duration: 25 Jul 201129 Jul 2011

Publication series

NameIAU Symposium Proceedings Series
PublisherCAMBRIDGE UNIV PRESS
Volume283
ISSN (Print)1743-9213

Conference

Conference283rd Symposium of the International-Astronomical-Union
Country/TerritorySpain
CityPuerto de la Cruz
Period25/07/1129/07/11

Keywords

  • planetary nebulae: individual (NGC 40)
  • methods: numerical
  • 3-DIMENSIONAL PHOTOIONIZATION STRUCTURE
  • CHEMICAL ABUNDANCES
  • DISTANCES
  • EVOLUTION

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