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Chemical abundances of planetary nebulae from optical recombination lines – I. Observations and plasma diagnostics |
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| Authors: | Y. Liu X.-W. Liu S.-G. Luo M. J. Barlow |
| Affiliation: | Department of Astronomy, Peking University, Beijing 100871, China;Center for Astrophysics, Guangzhou University, Guangzhou 510400, China;Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT |
| Abstract: | |
| Keywords: | ISM: abundances planetary nebulae: general |