Very Large Telescope deep echelle spectroscopy of Galactic planetary nebulae NGC 6153, M 1-42 and Hf 2-2
Monthly Notices of the Royal Astronomical Society（2016）
Abstract
We present deep spectroscopy of three Galactic planetary nebulae (PNe) with large abundance discrepancy factors: NGC 6153, M 1-42 and Hf 2-2. The spectra were obtained with Very Large Telescope/Ultraviolet and Visual Echelle Spectrograph and cover the whole optical range (3040–11 000 Å) with a spectral resolution of ∼20 000. For all three PNe, several hundred emission lines were detected and ident...
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Key words
atomic data,atomic processes,line: identification,planetary nebulae: individual: NGC 6153 – planetary nebulae: individual: M 1-42,planetary nebulae: individual: Hf 2-2
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