Abstract

We present photometric and spectrocsopic observations of supernovae carried out with the 2.5-m telescope of the Caucasus Mountain Observatory of SAI MSU. The light curves for the objects 2017egm, 2017eaw, 2018cow, 2018aoq, 2018zd, 2019yvr, 2019vxm, 2020tlf, and 2020xtz were constructed and their basic parameters were determined. The observed light curves are compared to the theoretical calculations for SNe II-P 2017eaw and 2018aoq. The spectra of SNe 2019vxm, 2019yvr, 2020tlf, 2020xtz are presented. The profiles of emission lines are studied for SNe IIn 2019vxm and 2020tlf. Spectral modeling was carried out for SNe 2019yvr and 2020xtz. The results of the program of prompt SNe spectral classification for eight objects are reported.

中文翻译：

---

SAI MSU 高加索山天文台 2.5 米望远镜研究超新星的进展

摘要

我们展示了使用 SAI MSU 高加索山天文台的 2.5 米望远镜对超新星进行的光度和光谱观测。构建了2017egm、2017eaw、2018cow、2018aoq、2018zd、2019yvr、2019vxm、2020tlf和2020xtz天体的光变曲线并确定了其基本参数。将观测到的光变曲线与 SNe II-P 2017eaw 和 2018aoq 的理论计算值进行比较。给出了 SNe 2019vxm、2019yvr、2020tlf、2020xtz 的光谱。研究了 SNe IIn 2019vxm 和 2020tlf 的发射线轮廓。对 SNe 2019yvr 和 2020xtz 进行了光谱建模。报告了八个物体的即时超新星光谱分类程序的结果。