The planetary nebula NGC 3132 revisited: high definition 3D photoionization model

Monteiro, H., de Oliveira, C. Mendes, Amram, P., Stanghellini, L., Wesson, R., Bouvis, K., Akras, S., Matsuura, M. ORCID: https://orcid.org/0000-0002-5529-5593 and Quint, B.C. 2025. The planetary nebula NGC 3132 revisited: high definition 3D photoionization model. Monthly Notices of the Royal Astronomical Society 10.1093/mnras/staf488

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Abstract

We present a detailed 3D photoionization model of the planetary nebula NGC 3132, constrained by the latest observations. Using the MOCASSIN code, the model incorporates integrated and spatially resolved spectroscopy, velocity-resolved line profiles, emission line maps, and photometry, including recent high-quality data from MUSE (VLT) and JWST among others. Based on new data from the SAMFP instrument at SOAR, the three-dimensional density structure of the nebula was obtained by assuming homologous expansion of the surrounding nebular gas. The final fitted model successfully reproduces all key observational constraints available, particularly in terms of the detailed emission line integrated fluxes and ionization structures across different ionic stages. The results of the model show that the progenitor star had a mass of (2.7 ± 0.2) M⊙ and is surrounded by a He poor shell of dust and gas. The abundances of He, C, N, O, and S determined by the model show that the nebula has C/O = (2.02 ± 0.28) and N/O = (0.39 ± 0.38) consistent with the progenitor mass found.

Item Type:	Article
Date Type:	Published Online
Status:	In Press
Schools:	Schools > Physics and Astronomy
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by/4.0/, Start Date: 2025-03-27
Publisher:	Oxford University Press
ISSN:	0035-8711
Date of First Compliant Deposit:	7 April 2025
Last Modified:	07 Apr 2025 15:45
URI:	https://orca.cardiff.ac.uk/id/eprint/177465

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