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arXiv · 2105.01495

The morpho-kinematical structure and chemical abundances of the complex planetary nebula NGC 1514

Alba Aller·Roberto Vázquez·Lorenzo Olguín·Luis Felipe Miranda·Michael E. Ressler
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Abstract

We present high-resolution, long-slit optical spectra and images of the planetary nebula NGC1514. The position velocity maps of the [OIII] emission line reveal complex kinematics with multiple structures. A morpho-kinematical analysis suggests an inner shell, originally spherical and now distorted by several bubbles, and an attached outer shell. The two well-defined, mid-infrared rings of NGC1514 are not detected in our high-resolution, long-slit spectra, which prevented us from doing a kinematical analysis of them. Based exclusively on their morphology, we propose a barrel-like structure to explain the rings. Several ejection processes have been possibly involved in the formation of the nebula although a time sequence is difficult to establish with the current data. We also analyze intermediate-resolution, long-slit spectra with the goal of studying the physical parameters and chemical abundances of NGC1514. The nebular spectra reveal a moderate-excitation nebula with weak emission lines of [ArIII], [NeIII], HeI and HeII. No [NII] neither other low-excitation emission lines are detected. We found an electron temperature around 14000K in the gas and an electron density in the range of 2000 and 4000 cm$^{-3}$.

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Alba Aller, Roberto Vázquez, Lorenzo Olguín, Luis Felipe Miranda, Michael E. Ressler. 2021-05-04. The morpho-kinematical structure and chemical abundances of the complex planetary nebula NGC 1514. https://doi.org/10.1093/mnras/stab1233

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