Apparent magnitudes of luminous planetary nebula nuclei. I. Method and application
Journal Article
·
· Astrophys. J.; (United States)
The paper presents new B- and/or V-magnitudes for the nuclei of 51 planetary nebulae, as well as limits for 10 others, from absolute photometry with the University of Illinois 1 m telescope, and a superior method of extracting stellar continuum fluxes from a bright nebular background. The errors and the limitations of the method are carefully examined. The results are compared with the widely circulated list of preliminary central-star magnitudes determined by Shao and Liller, which are shown to suffer frequently from severe contamination from the nebular continuum, and a calibration is provided for older photographic magnitudes. Finally, the nebular contribution to the continuum in the context of the evolution of central stars on the log L-log T plane is examined, and the implications for future observations of hot and/or young planetary nuclei are discussed. 35 references.
- Research Organization:
- Illinois Univ., Urbana
- OSTI ID:
- 5797477
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 295; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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