论文标题
用Hβ监测AGN。 ii。历史上三个Seyfert星系的混响映射显示出具有变化不对称性的Hβ曲线：MRK 79，NGC 3227和MRK 841
Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
论文作者
论文摘要
我们报告了从2016年12月至2017年5月进行的一项与怀俄明州红外天文台（Wiro）2.3-meter望远镜进行的一项活动，报道了三个明亮的Seyfert星系，MRK 79，NGC 3227和MRK 841的结果。过去，这三个目标都显示出不对称的宽H $β$发射线，尽管在我们的观察过程中它们的发射线相对对称。我们测量了所有三个目标的Hβ时间滞后和黑洞的估计质量 - 在MRK 841的情况下。对于MRK 79和NGC 3227，数据具有足够的质量，可以解决明显的时间滞后，这是速度的函数，并且可以计算两维速度速度速度速度绘制映射。 MRK 79显示了高速气体的较小时间滞后，但分布不是对称的，其复杂的速度延迟图可能是由于流入和流出的Hβ发出磁盘的组合而导致的，这可能是单个较大结构的一部分。 NGC 3227显示了蓝光气体的时间滞后最大的时间滞后，二维速度延迟图表明磁盘有一些流入。我们将结果与以前的工作进行了比较，并找到了不同时间滞后的证据，尽管亮度相似，并且不断发展的宽线区域结构。
We report the results of reverberation mapping three bright Seyfert galaxies, Mrk 79, NGC 3227, and Mrk 841, from a campaign conducted from December 2016 to May 2017 with the Wyoming Infrared Observatory (WIRO) 2.3-meter telescope. All three of these targets have shown asymmetric broad H$β$ emission lines in the past, although their emission lines were relatively symmetric during our observations. We measured Hβ time lags for all three targets and estimated masses of their black holes -- for the first time in the case of Mrk 841. For Mrk 79 and NGC 3227, the data are of sufficient quality to resolve distinct time lags as a function of velocity and to compute two-dimensional velocity-delay maps. Mrk 79 shows smaller time lags for high-velocity gas but the distribution is not symmetric, and its complex velocity-delay map could result from the combination of both inflowing and outflowing Hβ emitting disks that may be part of a single larger structure. NGC 3227 shows the largest time lags for blueshifted gas and the two-dimensional velocity-delay map suggests a disk with some inflow. We compare our results with previous work and find evidence for different time lags despite similar luminosities, as well as evolving broad line region structures.
