Physics & Astrophysics
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National & International Facility time
Dr Raphael Hirschi, with Keele co-investigators Dr Cyril Georgy, Dr Nobuya Nishimura and PhD students Jacqueline den Hartogh and Andrea Cristini, led a successful long-term project proposal submitted to the DiRAC (Distributed Research utilising Advanced Computing) UK facility. The project entitled "Stellar Hydrodynamics, Evolution and Nucleosynthesis" was awarded a total of 9.68 million CPU-hours over three years.
This corresponds to a single-core desktop computer running non-stop for over 1,000 years. The electricity cost for this computing time is roughly £50,000 and the total nominal value is in excess of £100,000. This award will boost the research undertaken within the framework of the ERC SHYNE project.
The computing time will be used to run the first detailed 3D hydrodynamics simulation of convective carbon burning (see the preliminary results obtained by Andrea Cristini) in massive stars, and to
run nuclear reaction rates uncertainty studies.
Dr Barry Smalley and a team of international collaborators, has won time on NASA's Kepler/K2 space telescope for a project on "Am stars: peculiarities, pulsations and planets". During two observing campaigns of 80 days, one measurement will be taken every 30 minutes of several stars within the K2 field of view to study the interaction between stellar pulsations and chemical peculiarity.
Dr Jacco van Loon, leading a large international team, has been awarded 7.1 hours with the Atacama Large (sub-) Millimeter Array (ALMA) at the 5km high plateau of Chajnantor in northern Chile, to observe CO and SiO molecules in the remnant of a supernova explosion which is slamming into an interstellar cloud.
Keele PhD student Steven Goldman won another 24 hours of time on the Australia Telescope Compact Array (ATCA), to continue his successful search for OH maser emission in the Large Magellanic Cloud galaxy.
Professor Nye Evans has won 5.5 hours on the NASA Stratospheric Observatory For Infrared Astronomy (SOFIA) to continue his study of "The Born-again phenomenon". "Born-again" red giant stars are very rare, poorly observed, and little understood events that can give us a glimpse of the eventual fate of the Sun. The SOFIA observations will throw light on a phase of the evolution of low mass stars that is very poorly understood.
The images are vertical cuts of 3-dimensional simulations of the interior of a star (3-dimensional plane-parallel simulations of the convective carbon-burning shell in a star 15 times the mass of the sun).