Category Archives: Uncategorized

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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Hyperfine structure constants for singly ionized manganese (Mn II) using Fourier transform spectroscopy

Townley-Smith, Keeley; Nave, Gillian; Pickering, Juliet C.; Blackwell-Whitehead, Richard J. We expand on the comprehensive study of hyperfine structure (HFS) in Mn II conducted by Holt et al. (1999) by verifying hyperfine magnetic dipole constants (A) for 20 levels previously … 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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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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