Monthly Archives: December 2012

Dielectronic Recombination Lines of C+

Taha Sochia (1), Peter J. Storeya (1) ((1) University College London, Department of Physics and Astronomy, Gower Street, London, WC1E 6BT) The current paper presents atomic data generated to investigate the recombination lines of C II in the spectra of … Continue reading

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Applying a one-dimensional PDR model to the Taurus molecular cloud and its atomic envelope

J. S. Heiner (1) , E. Vázquez-Semadeni (1) ((1)Centro de Radioastronomía y Astrofísica (CRyA), Universidad Nacional Autónoma de México, C.P. 58190 Morelia, Michoacán, Mexico) In this contribution, we test our previously published one-dimensional PDR model for deriving total hydrogen volume … Continue reading

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Strontium: To LTE or non-LTE that is the question

C. J. Hansen (1), M. Bergemann (2), G. Cescutti (3), P. Francois (4), A. Arcones (5), A. I. Karakas (6), K. Lind (2), and C. Chiappini (3) ((1) Landessternwarte, ZAH, K ̈ nigstuhl 12, 69117 Heidelberg, Germany; (2) Max-Planck Institute … Continue reading

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Astrophysical tests of atomic data important for stellar Mg abundance determinations

L. Mashonkina (1,2) ((1) Universitäts-Sternwarte München, Scheinerstr. 1, D-81679 München, Germany; (2) Institute of Astronomy, Russian Academy of Sciences, RU-119017 Moscow, Russia) Magnesium abundances of cool stars with different metallicities are important for understanding the galactic chemical evolution. This study … Continue reading

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Electron Temperatures and Free-Electron Energy Distributions of Nebulae from C II Dielectronic Recombination Lines

Peter J. Storey (1) & Taha Sochi (1) ((1) University College London, Department of Physics  and Astronomy, Gower Street, London, WC1E 6BT) A recently generated theoretical line list of C II dielectronic recombination lines together with observational data gathered from … Continue reading

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Very deep spectroscopy of the bright Saturn Nebula NGC 7009 – II. Analysis of the rich optical recombination spectrum

X. Fang (1) & X.-W. Liu (1,2) ((1) Department of Astronomy, School of Physics, Peking University, Beijing 100871, P. R. China; (2) Kavli Institute for Astronomy and Astrophysics at Peking University, Beijing 100871, P. R. China) [Abridged] We present a … Continue reading

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Plasma Diagnostics for Planetary Nebulae and H II Regions Using the N II and O II Optical Recombination Lines

I. A. McNabb (1) , X. Fang (2), X.-W. Liu (1,2), R. J. Bastin (3) & P. J. Storey (3) ((1)Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China; (2) Departament of Astronomy, School of Physics, Peking University, … Continue reading

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