Tag Archives: ORLs

Very deep spectroscopy of the bright Saturn Nebula NGC 7009 – II. Analysis of the rich optical recombination spectrum

X. Fang (1) & X.-W. Liu (1,2) ((1) Department of Astronomy, School of Physics, Peking University, Beijing 100871, P. R. China; (2) Kavli Institute for Astronomy and Astrophysics at Peking University, Beijing 100871, P. R. China) [Abridged] We present a … Continue reading

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Plasma Diagnostics for Planetary Nebulae and H II Regions Using the N II and O II Optical Recombination Lines

I. A. McNabb (1) , X. Fang (2), X.-W. Liu (1,2), R. J. Bastin (3) & P. J. Storey (3) ((1)Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China; (2) Departament of Astronomy, School of Physics, Peking University, … Continue reading

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