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Electron temperatures and densities of planetary nebulae determined from the nebular hydrogen recombination spectrum and temperature and density variations |
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| Authors: | Y. Zhang X.-W. Liu R. Wesson P. J. Storey Y. Liu I. J. Danziger |
| Affiliation: | Department of Astronomy, Peking University, Beijing 100871, China;National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT;Department of Physics, Guangzhou University, Guangyuan Zhong Lu 248, Guangzhou 510405, China;Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, 1-34131 Trieste, Italy |
| Abstract: | |
| Keywords: | atomic processes ISM: abundances planetary nebulae: general |