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2025MNRAS.539.1756M - Mon. Not. R. Astron. Soc., 539, 1756-1774 (2025/May-2)

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

MONTEIRO H., MENDES DE OLIVEIRA C., AMRAM P., STANGHELLINI L., WESSON R., BOUVIS K., AKRAS S., MATSUURA M. and QUINT B.C.

Abstract (from CDS):

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 scanning Fabry-Perot interferometer (SAM-FP) instrument at Southern Astrophysical Research (SOAR) telescope, 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 $(2.7 \pm 0.2)\, {\rm M}_{\odot }$ 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 = $(2.02 \pm 0.28)$ and N/O = $(0.39 \pm 0.38)$ consistent with the progenitor mass found.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): radiative transfer - ISM: abundances - ISM: kinematics and dynamics - Planetary nebulae: individual: NGC 3132

Simbad objects: 3

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