National;
Astronomical;
Observatories;
/;
Nanjing;
Institute;
of;
Astronomical;
Optics;
&;
Technology,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210042,;
China;
Key;
Laboratory;
of;
Astronomical;
Optics;
&;
Technology,;
Nanjing;
Institute;
of;
Astronomical;
Optics;
&;
Technology,;
Chinese;
Academy;
of;
Sciences,;
Nanjing;
210042,;
China;
Physics;
&;
Astronomy;
Department,;
California;
State;
University;
Northridge,;
18111;
Nordhoff;
Street,;
Northridge,;
California;
91330-8268;