A deep survey of heavy element lines in planetary nebulae – I. Observations and forbidden-line densities, temperatures and abundances |
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| Authors: | Y. G. Tsamis,M. J. Barlow &dagger ,X.-W. Liu &Dagger ,I. J. Danziger, P. J. Storey |
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| Affiliation: | Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT;The Met. Office, London Road, Bracknell RG12 2SZ;Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34131 Trieste, Italy |
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| Abstract: | |
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| Keywords: | ISM: abundances planetary nebulae: general |
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