Category Archives: Atomic data applications

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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Non-LTE line formation of Fe in late-type stars – III. 3D non-LTE analysis of metal-poor stars

Amarsi, A. M.; Lind, K.; Asplund, M.; Barklem, P. S.; Collet, R. AA(Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia anish.amarsi@anu.edu.au), AB(Max Planck Institute für Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany; Theoretical Astrophysics, Department of … Continue reading

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General model of depolarization and transfer of polarization of singly ionized atoms by collisions with hydrogen atoms

Derouich, M. (Astronomy Department, Faculty of Science, King Abdulaziz University, 21589 Jeddah, Saudi Arabia) Simulations of the generation of the atomic polarization is necessary for interpreting the second solar spectrum. For this purpose, it is important to rigorously determine the … Continue reading

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