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Abundance determination in PNe: How to deal with large chemical inhomogeneities

Published online by Cambridge University Press:  06 October 2025

C. Morisset Open the ORCID record for C. Morisset [Opens in a new window] ,
J. García-Rojas ,
V. Gomez-Llanos  and
H. Monteiro Open the ORCID record for H. Monteiro [Opens in a new window]
C. Morisset*
Affiliation:
Instituto de Astronomía (IA), Universidad Nacional Autónoma de México, Apdo. postal 106, C.P. 22800 Ensenada, Baja California, México Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, 62210 Cuernavaca, Mor., México
J. García-Rojas
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
V. Gomez-Llanos
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
H. Monteiro
Affiliation:
Instituto de Física e Química, Universidade Federal de Itajubá, Av. BPS 1303-Pinheirinho, 37500-903, Itajubá, Brazil
*
Email: chris.morisset@gmail.com
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Abstract

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Abundance determinations in planetary nebulae (PNe) are crucial for understanding stellar evolution and the chemical evolution of the host galaxy.

We discuss the complications involved when the presence of a metal-rich phase is suspected in the nebula. We demonstrate that the presence of a cold region emitting mainly metal recombination lines necessitates a detailed treatment to obtain an accurate assessment of the enrichment of this cold gas phase.

Keywords

(stars:) binaries: generalISM: abundances(ISM:) planetary nebulae: general

Information

Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S384: Planetary Nebulae: A Universal Toolbox in the Era of Precision Astrophysics , December 2023 , pp. 150 - 155
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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