Author Affiliations +
Jianchao Xue,1,2 Marco Romoli,3 Federico Landini,4 Cristian Baccani,3 Hui Li,1,2 Yunqi Wang,5 Bo Chen5
1Purple Mountain Observatory, CAS (China)
2Univ. of Science and Technology of China (China)
3Univ. of Florence (Italy)
4Astrophysical Observatory of Torino (Italy)
5Changchun Institute of Optics, Fine Mechanics and Physics (China)