Monthly Archives: February 2012

Atomic data user-producer community developments: the AstroAtom blog

Claudio Mendoza (IVIC/CeCalCULA, Venezuela), Efrain Gatuzz (IVIC, Venezuela), Valentina Luridiana (IAC, Spain), Manuel Bautista (WMSU, USA) Talk given at the VAMDC Annual Meeting, University of Vienna, Austria, 23 February 2012.

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VAMDC portal demo

Nikolai Pishkunov (Uppsala University, Sweden) & Kevin Benson (UCL/MSSL, UK) Talk given at the VAMDC Annual Meeting, University of Vienna, Austria, 24 February 2012.

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Angular momentum changing transitions in proton-Rydberg atom collisions

D. Vrinceanu (1) , R. Onofrio (2,3) and H. R. Sadeghpour (3) ((1) Texas  Southern  University,  Houston,  TX, USA; (2)Universitá di Padova, Padova, Italy; (3) Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA) Collisions between electrically charged particles and neutral atoms are central for understanding the dynamics … Continue reading

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Non-LTE effects on the lead and thorium abundance determinations for cool stars

L. Mashonkina (1, 2),  A. Ryabtsev (3) and A. Frebel (4,5) ((1) Universitäts-Sternwarte München, Scheinerstr, München, Germany; (2) Russian Academy of Sciences, RU, Moscow, Russia; (3) Russian Academy of Sciences, 142190, Troitsk, Moscow region, Russia; (4) Kavli Institute for Astrophysics … Continue reading

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Detection of the Second r-process Peak Element Tellurium in Metal-Poor Stars

Ian U. Roederer (3), James E. Lawler (4), John J. Cowan (5), Timothy C. Beers (6,7,8), Anna Frebel (9), Inese I. Ivans (10), Hendrik Schatz (7,8,11), Jennifer S. Sobeck (12), Christopher Sneden (13) ((3) Carnegie Observatories, CA, USA; (4) University … Continue reading

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On the sodium overabundance of giants in open clusters: The case of the Hyades

Rodolfo Smiljanic (European Southern Observatory,  Garching bei München, Germany) Sodium abundances have been determined in a large number of giants of open clusters but conflicting results, ranging from solar values to overabundances of up to five orders of magnitude, have … Continue reading

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The Curious Conundrum Regarding Sulfur Abundances In Planetary Nebulae

R.B.C. Henry (1), Angela Speck (2), Amanda I. Karakas (3), Gary J. Ferland (4), Mason Maguire (5) ((1) University of Oklahoma, Norman, OK; (2) University of Missouri, Columbia, MO, USA; (3) Mount Stromlo Observatory,  Australia; (4)  University of Kentucky, Lexington, … Continue reading

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