Category Archives: Atomic data applications

Line Ratios for Solar Wind Charge Exchange with Comets

Mullen, P. D.; Cumbee, R. S.; Lyons, D.; Gu, L.; Kaastra, J.; Shelton, R. L.; Stancil, P. C. Charge exchange (CX) has emerged in X-ray emission modeling as a significant process that must be considered in many astrophysical environments—particularly comets. … Continue reading

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The impact of atomic data selection on nebular abundance determinations

Juan de Dios, Leticia; Rodríguez, Mónica Atomic data are an important source of systematic uncertainty in our determinations of nebular chemical abundances. However, we do not have good estimates of these uncertainties since it is very difficult to assess the … Continue reading

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Fe XVII Opacity at Solar Interior Conditions

Iglesias, Carlos A.; Hansen, Stephanie B. A recent study of Fe xvii R-matrix calculations aimed at resolving outstanding opacity problems claimed that substantial photon absorption from atomic core ionization processes was not previously considered. It is shown, however, that major … Continue reading

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Improved Cr II log(gf) Values and Abundance Determinations in the Photospheres of the Sun and Metal-poor Star HD 84937

Lawler, J. E.; Sneden, C.; Nave, G.; Den Hartog, E. A.; Emrahoğlu, N.; Cowan, J. J. New emission branching fraction (BF) measurements for 183 lines of the second spectrum of chromium (Cr ii) and new radiative lifetime measurements from laser-induced … Continue reading

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Experimental and theoretical oscillator strengths of Mg I for accurate abundance analysis

Pehlivan Rhodin, A.; Hartman, H.; Nilsson, H.; Jonsson, P. Context. With the aid of stellar abundance analysis, it is possible to study the galactic formation and evolution. Magnesium is an important element to trace the alpha-element evolution in our Galaxy. … Continue reading

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Systematic non-LTE study of the -2.6 < [Fe/H] < 0.2 F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu

Zhao, G.; Mashonkina, L.; Yan, H. L.; Alexeeva, S.; Kobayashi, C.; Pakhomov, Yu.; Shi, J. R.; Sitnova, T.; Tan, K. F.; Zhang, H. W.; Zhang, J. B.; Zhou, Z. M.; Bolte, M.; Chen, Y. Q.; Li, X.; Liu, F.; Zhai, … Continue reading

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3D NLTE analysis of the most iron-deficient star, SMSS0313-6708

Nordlander, Thomas; Amarsi, Anish M.; Lind, Karin; Asplund, Martin; Barklem, Paul S.; Casey, Andy R.; Collet, Remo; Leenaarts, Jorrit Models of star formation in the early universe depend on the details of accretion, fragmentation and radiative feedback. Different simulations predict … Continue reading

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