Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-22T04:04:41.415Z Has data issue: false hasContentIssue false

Two New Planetary Nebulae and an AGN in the Galactic Plane

Published online by Cambridge University Press:  05 March 2013

S. H. Beer
Affiliation:
School of Mathematics, Physics, Computing and Electronics, Macquarie University, North Ryde, NSW 2109, Australia
A. E. Vaughan
Affiliation:
School of Mathematics, Physics, Computing and Electronics, Macquarie University, North Ryde, NSW 2109, Australia
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A search for planetary nebulae was carried out using candidates selected by their infrared colours and 5 GHz radio emission. One new planetary nebula was identified on the basis of its small angular size, strong [O iii] emission and infrared colours. Another object, known as the possible planetary nebula Wray 16–28, is similarly identified as a planetary nebula. An undiscovered AGN was also found, and is classed as a Seyfert 2 galaxy on the basis of its strong O iii emission, linewidths of ∼500 km s−1, and 5 GHz radio flux. Low-resolution optical spectra are presented and distance estimates discussed.

Type
Research Article
Copyright
Copyright © Astronomical Society of Australia 1999

References

Cuisinier, F., Terzan, A., & Acker, A. 1993, A&A, 277, 203 Google Scholar
Gurzadyan, G. A. 1997, The Physics and Dynamics of Planetary Nebulae (Berlin: Springer)Google Scholar
Milne, D. K., & Aller, L. H. 1975, A&A, 38, 183 Google Scholar
Morgan, D. H., & Good, A. R. 1992, A&AS, 92, 571 Google Scholar
Pottasch, S. R. 1984, Planetary Nebulae—A Study of Late Stages of Stellar Evolution (Dordrecht: Reidel)Google Scholar
Pottasch, S. R., Bignell, C., Olling, R., & Zijlastra, A. A. 1988, A&A, 205, 248 Google Scholar
Schneider, S. E., & Buckley, D. 1996, ApJ, 459, 606 Google Scholar
Van de Steene, G. C., & Pottasch, S. R. 1993, A&A, 274, 895 Google Scholar
Van de Steene, G. C., Sahu, K. C., & Pottasch, S. R. 1996, A&AS, 120, 111 Google Scholar
Woltjer, L. 1990, in Active Galactic Nuclei, ed. R. D. Blandford et al. (Berlin: Springer)Google Scholar