Author Archives: AstroAtom

Special Session EWASS 2018: Atomic and molecular data needs for astronomy and astrophysics

The aim of this session is to encourage further dialogue and promote knowledge transfer between astronomers with strong atomic and molecular data needs and those who produce this data from laboratory measurements and calculations. We hope this will foster new … Continue reading

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The Opacity Project: computational methods

James Colgan Los Alamos National Laboratory, Los Alamos, NM 87545, USA This viewpoint relates to an article by K A Berrington et al (1987 J. Phys. B: At. Mol. Opt. Phys. 20 6379–97) and was published as part of a … Continue reading

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Comment on “Large enhancement in high-energy photoionization of Fe XVII and missing continuum plasma opacity”

C. Blancard (1), J. Colgan (2), Ph. Cossé (1), G. Faussurier (1), C. J. Fontes (2), F. Gilleron (1), I. Golovkin (3), S. B. Hansen (4*), C. A. Iglesias (5), D. P. Kilcrease (2), J. J. MacFarlane (3), R.M. More … Continue reading

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Electron impact excitation of N IV: calculations with the DARC code and a comparison with ICFT results

K. M. Aggarwal (1), F. P. Keenan (1), K. D. Lawson (2) (1) Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UK. (2) CCFE, Culham Science Centre, Abingdon OX14 3DB, UK. There have been … Continue reading

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The primordial helium abundance and the number of neutrino families

Peimbert, A. (1), Peimbert, M. (1), and Luridiana, V. (2,3) (1) Instituto de Astronomía, Universidad Nacional Autónoma de México, México. (2) Instituto de Astrofísica de Canarias, Spain. (3) Departamento de Astrofísica, Universidad de La Laguna, Spain. Based on observations of … Continue reading

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Young stars and ionized nebulae in M83: comparing chemical abundances at high metallicity

Fabio Bresolin (1), Rolf-Peter Kudritzki (1), Miguel A. Urbaneja (2), Wolfgang Gieren (3), I-Ting Ho (1), Grzegorz Pietrzynski (3). (1) Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA. (2) Institut für Astro- und Teilchenphysik, Universität … Continue reading

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Photoionization of Ar VIII

Liang Liang, Wen-xian Jiang, Chao Zhou Physics Department, Xi’an University of Architecture and Technology, Xi’an 710055, People’s Republic of China The photoionization cross section, energy levels and widths of 22 Rydberg series (in the autoionization region) for Na-like Ar VIII … Continue reading

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Scaling of collision strengths for highly-excited states of ions of the H- and He-like sequences

L. Fernández-Menchero (1,2), G. Del Zanna (3), N. R. Badnell (1) (1) Department of Physics, University of Strathclyde. Glasgow G4 0NG, UK. (2) Department of Physics and Astronomy, Drake University, 2507 University Avenue. Des Moines, IA 50311, USA. (3) Department … Continue reading

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Fine-structure electron-impact excitation of Ne+ and Ne2+ for low temperature astrophysical plasmas

Qianxia Wang (1), S. D. Loch (1), Y. Li (1), M. S. Pindzola (1), R. S. Cumbee (2), P. C. Stancil (2), B. M. McLaughlin (3), and C. P. Ballance (3) (1) Department of Physics, Auburn University, AL 36849, USA. … Continue reading

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Energy levels and transition rates for helium-like ions with Z=10-36

R. Si (1,2,3), X.L. Guo (2,3), K. Wang (4), S. Li (5), J. Yan (5,6,7), C.Y. Chen (2,3), T. Brage (1), Y.M. Zou (2,3)   (1) Division of Mathematical Physics, Department of Physics, Lund University, Box 118, SE-221 00 Lund, … Continue reading

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