Institution: | 1. Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, PR China;2. Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, PR China;3. Graduate University of Chinese Academy of Sciences, Beijing, PR China;4. Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlár?ská 2, Brno 611 37, Czech Republic |