Affiliation: | Observatoire Astronomique, Universitéde Strasbourg and CNRS UMR 7550, 11 rue de l'Université, 67000 Strasbourg, France;Sterrenkundig Instituut 'Anton Pannekoek', University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, the Netherlands;Section Computational Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, the Netherlands |