Search Results - "Storey, P J"

Collision strengths for nebular [O iii] optical and infrared lines by Storey, P. J., Sochi, Taha, Badnell, N. R.

“…We present electron collision strengths and their thermally averaged values for the nebular forbidden lines of the astronomically abundant doubly ionized…”
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Helium line emissivities for nebular astrophysics by Del Zanna, G, Storey, P J

“…ABSTRACT We present the results of several collisional-radiative models describing optically thin emissivities of the main lines in neutral helium formed by…”
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Electron-impact excitation of O ii fine-structure levels by Kisielius, R., Storey, P. J., Ferland, G. J., Keenan, F. P.

“…Effective collision strengths for forbidden transitions among the five energetically lowest fine-structure levels of O ii are calculated in the Breit–Pauli…”
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MOCASSIN: a fully three-dimensional Monte Carlo photoionization code by Ercolano, B., Barlow, M. J., Storey, P. J., Liu, X.-W.

“…The study of photoionized environments is fundamental to many astrophysical problems. Up to the present most photoionization codes have numerically solved the…”
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Theoretical values for the [O iii] 5007/4959 line-intensity ratio and homologous cases by Storey, P. J., Zeippen, C. J.

“…The magnetic-dipole probabilities for the 1D2–3P2 and 1D2–3P1 transitions in carbon-like and oxygen-like ions are calculated up to atomic number Z=12,…”
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Theoretical calculations of the H i, He i and He ii free–bound continuous emission spectra by Ercolano, B., Storey, P. J.

“…We present coefficients for the calculation of the continuous emission spectra of H i, He i and He ii due to electron–ion recombination. Coefficients are given…”
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The dusty mocassin: fully self-consistent 3D photoionization and dust radiative transfer models by Ercolano, B., Barlow, M. J., Storey, P. J.

“…We present the first 3D Monte Carlo (MC) photoionization code to include a fully self-consistent treatment of dust radiative transfer (RT) within a…”
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Chemical abundances for Hf 2-2, a planetary nebula with the strongest-known heavy-element recombination lines by Liu, X-W, Barlow, M. J., Zhang, Y., Bastin, R. J., Storey, P. J.

“…We present high-quality optical spectroscopic observations of the planetary nebula (PN) Hf 2-2. The spectrum exhibits many prominent optical recombination…”
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A deep survey of heavy element lines in planetary nebulae - II. Recombination-line abundances and evidence for cold plasma by Tsamis, Y. G., Barlow, M. J., Liu, X.-W., Storey, P. J., Danziger, I. J.

“…Abstract In our Paper I, we presented deep optical observations of the spectra of 12 Galactic planetary nebulae (PNe) and three Magellanic Cloud PNe, carrying…”
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Electron temperatures and densities of planetary nebulae determined from the nebular hydrogen recombination spectrum and temperature and density variations by Zhang, Y., Liu, X.-W., Wesson, R., Storey, P. J., Liu, Y., Danziger, I. J.

“…A method is presented to derive electron temperatures and densities of planetary nebulae (PNe) simultaneously, using the observed hydrogen recombination…”
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The hydrogen-deficient knot of the ‘born-again’ planetary nebula Abell 58 (V605 Aql) by Wesson, R., Barlow, M. J., Liu, X-W., Storey, P. J., Ercolano, B., De Marco, O.

“…We have analysed deep optical spectra of the ‘born-again’ planetary nebula Abell 58 and its hydrogen-deficient knot, surrounding V605 Aql, which underwent a…”
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Heavy elements in Galactic and Magellanic Cloud H ii regions: recombination-line versus forbidden-line abundances by Tsamis, Yiannis G., Barlow, M. J., Liu, X.-W., Danziger, I. J., Storey, P. J.

“…We have obtained deep optical, long-slit spectrophotometry of the Galactic H ii regions M 17, NGC 3576 and of the Magellanic Cloud H ii regions 30 Doradus, LMC…”
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Modelling low charge ions in the solar atmosphere by Dufresne, R P, Del Zanna, G, Storey, P J

“…ABSTRACT Extensions have been made recently to the coronal approximation for the purpose of modelling line emission from carbon and oxygen in the lower solar…”
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New atomic data for C i Rydberg states compared with solar UV spectra by Storey, P J, Dufresne, R P, Del Zanna, G

“…ABSTRACT We use the Breit–Pauli R-matrix method to calculate accurate energies and radiative data for states in C i up to n = 30 and with l ≤ 3. We provide the…”
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NGC 6153: a super-metal-rich planetary nebula? by Liu, X.-W., Storey, P. J., Barlow, M. J., Danziger, I. J., Cohen, M., Bryce, M.

“…We have obtained deep optical spectra of the planetary nebula NGC 6153, both along its minor axis and by uniformly scanning a long slit across the whole…”
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Emission and recombination coefficients for hydrogen with κ-distributed electron energies by Storey, P. J., Sochi, Taha

“…We provide a data set of emission and recombination coefficients of hydrogen using a κdistribution of electron energies rather than the more traditional…”
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Improved Optimization Strategy for Irradiance Equalization in Dynamic Photovoltaic Arrays by Storey, J. P., Wilson, P. R., Bagnall, D.

“…This paper proposes an improved strategy for the optimization of dynamic photovoltaic arrays (DPVAs) utilizing the "irradiance equalization" (IEq)…”
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Collision strengths and transition probabilities for Co iii forbidden lines by Storey, P J, Sochi, Taha

“…In this paper we compute the collision strengths and their thermally averaged Maxwellian values for electron transitions between the 15 lowest levels of doubly…”
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Methods for analyzing resonances in atomic scattering by Sochi, Taha, Storey, P. J.

“…Resonances, which are also described as autoionizing or quasi-bound states, play an important role in the scattering of atoms and ions with electrons. The…”
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Improved He i emissivities in the case B approximation by Porter, R. L., Ferland, G. J., Storey, P. J., Detisch, M. J.

“…ABSTRACT We update our prior work on the case B collisional‐recombination spectrum of He i to incorporate ab initio photoionization cross‐sections. This large…”
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