2021MNRAS.504.4806A -
Mon. Not. R. Astron. Soc., 504, 4806-4816 (2021/July-2)
The morpho-kinematical structure and chemical abundances of the complex planetary nebula NGC 1514.
ALLER A., VAZQUEZ R., OLGUIN L., MIRANDA L.F. and RESSLER M.E.
Abstract (from CDS):
We present high-resolution, long-slit optical spectra and images of the planetary nebula NGC 1514. The position velocity maps of the [O III] 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 NGC 1514 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 analyse intermediate-resolution, long-slit spectra with the goal of studying the physical parameters and chemical abundances of NGC 1514. The nebular spectra reveal a moderate-excitation nebula with weak emission lines of [Ar III], [Ne III], He I, and He II. Neither [N II] nor other low-excitation emission lines are detected. We found an electron temperature around 14 000 K in the gas and an electron density in the range of 2000-4000 cm–3.
Abstract Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society
Journal keyword(s):
ISM: abundances - ISM: kinematics and dynamics - planetary nebulae: individual: NGC 1514
Simbad objects:
6
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