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Very deep spectroscopy of NGC 7009
Published online by Cambridge University Press: 05 March 2015
Abstract
We report new calculations of the effective recombination coefficients for the nebular N ii and O ii lines and very deep spectroscopy of the bright planetary nebula (PN) NGC 7009.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 622
- Copyright
- Copyright © International Astronomical Union 2015