Photometry of SN 2015da

In this paper we report the results of the first ~four years of spectroscopic and photometric monitoring of the Type IIn supernova SN 2015da (also known as PSN...本论文报道了针对IIn型超新星SN 2015da（亦被称为PSN……）开展的首段约四年光谱与测光监测工作的相关结果。