Abstract
This paper describes integral field unit (IFU) spectroscopic observations of the Galactic planetary nebula (PN) NGC 2792. The physical conditions, chemical composition, and kinematic properties are discussed and found to be in good agreement with prior long-slit-based investigations. The intensity of the He II line indicates that the nebula is of high excitation class. In addition, we find that the nebula is optically thin, belongs to Peimbert type IIa, expanding at a mean velocity of 20.2 km/s and travelling radially at a mean velocity of 12.7±8 km/s. To describe the morphology and ionisation structure of NGC 2792, a series of emission-line maps extracted from the data cubes was constructed, revealing an overall elliptical shape with three internal low ionisation structures (LISs) ‘knots’. The three knots, which were detected for the first time, are located on the nebula’s rim and clearly appear in the low ionisation maps of [O II], [N II], and [S II] lines. We find no significant variations between the physical and chemical characteristics of these knots and the nebula as a whole. The astronomic data provided by Gaia space mission reveals that the nebula is a member of the Galactic thin disc population and that it interacts with its ambient ISM.
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All the observations were obtained using the Wide Field Spectrograph instrument mounted on the 2.3-m ANU telescope at Siding Spring Observatory.
Change history
29 July 2023
The original version of this article has been revised: The first author’s name has been corrected.
31 July 2023
A Correction to this paper has been published: https://doi.org/10.1007/s10509-023-04222-1
Notes
a FITS file viewer using the QT widget library developed at the Max Planck Institute for Extraterrestrial Physics by Thomas Ott.
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Acknowledgements
The authors appreciate the referee’s positive and constructive feedback, which greatly helped to improve the quality of the manuscript. This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under the grant no. (G:168-247-14422). The authors, therefore, acknowledge with thanks DSR for technical and financial support. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.
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This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under the grant no. (G:168-247-14422).
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Snaid, S., Ali, A. & Alruhaili, A. Comprehensive study of the Galactic Planetary Nebula NGC 2792. Astrophys Space Sci 368, 62 (2023). https://doi.org/10.1007/s10509-023-04218-x
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DOI: https://doi.org/10.1007/s10509-023-04218-x