Light curves of two NGC6981 variables

Two previously unknown variable stars in the crowded central region of the globular cluster NGC 6981 are presented. The observations were made using the electron multiplying CCD...本文报道了球状星团（globular cluster）NGC 6981拥挤中心区域内两颗此前尚未被发现的变星（variable star）。本次观测采用电子倍增CCD（electron multiplying CCD）完成。