论文标题
在2016 - 2020年期间Seyfert Galaxy NGC 3516的核的外观变化
Changing looks of the nucleus of Seyfert galaxy NGC 3516 during 2016-2020
论文作者
论文摘要
在2016 - 2020年期间，NGC 3516与Shamakhy Astrophysical天文台的2-M望远镜进行了光谱观测结果。在2016年上半年，发现了密集的广泛组件HBETA，这表明与2014年相比，频谱类型的变化几乎是看不见的。在2016年下半年，宽阔的组成部分H $β$再次被削弱，实际上没有观察到，直到2019年底一直保持弱。2019年底，广泛的组成部分HBETA再次得到增强，并在2020年5月达到了该物体高状态的典型水平。在2016 - 2020年期间，我们观察到了NGC 3516的几种变化。
The results of spectral observations of NGC 3516 with the 2-m telescope of the Shamakhy Astrophysical Observatory during 2016-2020 are presented. In the first half of 2016, the intensive broad component Hbeta was found, which indicates a spectral type change compared to 2014, when the broad component was almost invisible. In the second half of 2016, the broad component H$β$ again was weakened and was practically not observed, remaining as weak until the end of 2019. At the end of 2019, the broad component Hbeta strengthened again, and in May 2020 reached a typical level for the high state of the object. During 2016-2020 we observed several changing looks of NGC 3516.
