Sai Zhai PhD candidate / contract Name S. Zhai Telephone +31 71 527 2727 E-mail szhai@strw.leidenuniv.nl PhD candidate / contract Science Sterrewacht Sterrewacht Work address Oort Niels Bohrweg 2 2333 CA Leiden Room number 537 Contact +31 71 527 2727 szhai@strw.leidenuniv.nl