Monthly Archives: March 2012

Photoionization Cross-Sections for the trans-iron element Se+ from 18 eV to 31 eV

B M McLaughlin (1,2) and C P Ballance (3) ((1) Centre for Theoretical Atomic, Molecular and Optical Physics, Queen’s University Belfast, Belfast, UK; (2) Institute for Theoretical Atomic and Molecular Physics, Harvard Smithsonian Center for Astrophysics, Cambridge, USA; (3) Department of … Continue reading

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Photoionization cross section calculations for the halogen-like ions Kr+ and Xe+

B M McLaughlin (1, 2) & C P Ballance (3) ((1) Queen’s University Belfast, Belfast, UK; (2) Harvard Smithsonian Center for Astrophysics, Cambridge, USA; (3) Auburn University, Auburn, USA) Photoionization cross sections calculations on the halogen-like ions Kr+ and Xe+ have … Continue reading

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Elemental abundances of intermediate age open cluster NGC 3680

A. W. Mitschang (1), G. M. De Silva (2), D. B. Zucker (1,3) ((1) Macquarie University, NSW  Australia; (2) Australian Astronomical Observatory,  Epping NSW Australia) We present a new abundance analysis of the intermediate age Galactic open cluster NGC 3680, … Continue reading

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Understanding and reducing statistical uncertainties in nebular abundance determinations

R. Wesson (1,2), D. J. Stock (1,3) & P. Scicluna (1,4) ((1) University College London, Gower Street, London, UK; (2) European Southern Observatory, Santiago, Chile; (3) University of Western Ontario, Ontario, Canada; (4) European Southern Observatory, Garching, Germany) Whenever observations … Continue reading

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Coupled Chemistry-Emission Model for Atomic Oxygen Green and Red-doublet Emissions in Comet C/1996 B2 Hyakutake

Anil Bhardwaj & Susarla Raghuram (Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695022, India) The green (5577 Å) and red-doublet (6300, 6364 Å) lines are prompt emissions of metastable oxygen atoms in the 1S and 1D states, respectively, that … Continue reading

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Testing the effects of opacity and the chemical mixture on the excitation of pulsations in B stars of the Magellanic Clouds

S. Salmon (1), J. Montalbán (1), T. Morel (1),  A. Miglio (1, 2),  M-A. Dupret (1), A. Noels (1) ((1) Institut d’Astrophysique et de Géophysique de l’Université de Liège, Belgium; (2) School of Physics and Astronomy, University of Birmingham, UK) The B-type pulsators known as β Cephei and Slowly Pulsating … Continue reading

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