We present optical spectroscopic and photometric observations of type II SNe 2019vxm and 2020tlf. The photometric monitoring of SN 2019vxm continued for 592 days, two spectra were collected. SN 2020tlf was observed for 163 days and we obtained one spectra. The maximum luminosity of both SNe is high: mag for SN 2019vxm and SN 2020tlf, respectively. SN 2019vxm displays typical for most of SNe IIn photometric evolution: long rise to the maximum and slow brightness decline with several changes of the decline rate. The light curve of SN 2020tlf shows it may be considered as an intermediate object between classes II‐P and II‐L. The spectral evolution of SN 2019vxm was typical for SNe IIn, while for SN 2020tlf only weak signs of circumstellar interaction were observed at maximum light.

中文翻译：

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SNe 2019vxm 和 2020tlf：两颗发光的 II 型超新星，具有星周相互作用的特征

我们展示了 II 型 SNe 2019vxm 和 2020tlf 的光学光谱和光度观测。SN 2019vxm的光度监测持续了592天，收集到了两张光谱。SN 2020tlf 被观测了 163 天，我们获得了一张光谱。两个超新星的最大光度都很高：SN 2019vxm 和 SN 2020tlf 分别为 mag。SN 2019vxm 显示了大多数 SNe IIn 光度演化的典型特征：长时间上升到最大值，缓慢亮度下降，下降率有几次变化。SN 2020tlf 的光变曲线表明它可以被视为介于 II-P 类和 II-L 类之间的中间物体。SN 2019vxm 的光谱演化是 SNe IIn 的典型特征，而 SN 2020tlf 在最大光强下仅观察到微弱的星周相互作用迹象。