Lick AGN监测项目的初步结果：Arp 151中黑洞的质量
First Results from the Lick AGN Monitoring Project: The Mass of the Black Hole in Arp 151
摘要：
我们最近在利克天文台的3米沙恩望远镜上完成了一项为期64晚的光谱监测活动，目的是测量附近13个（z < 0.05）塞弗特1星系中黑洞的质量，预计质量在10^6-10^7太阳质量范围内。我们在这里提出了这个项目的第一个结果--Arp 151中心黑洞的质量。在整个活动中的强可变性导致该对象在观察帧中4.25（+0.68/-0.66）天的异常干净的Hbeta滞后测量。结合可变光谱中的β发射线的宽度，我们确定了一个黑洞的质量为（7.1 +/- 1.2）× 10^6 M_sun，假设Onken等人对基于混响的维里质量进行了归一化。我们还发现速度分辨滞后信息内的β发射线，清楚地表明在β发射区的下落气体。进一步的详细分析可能会导致一个完整的模型的几何形状和运动学的宽线区域气体周围的中心黑洞在Arp 151。
英文摘要：
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 13 nearby (z < 0.05) Seyfert 1 galaxies with expected masses in the range ~10^6-10^7 M_sun. We present here the first results from this project -- the mass of the central black hole in Arp 151. Strong variability throughout the campaign led to an exceptionally clean Hbeta lag measurement in this object of 4.25(+0.68/-0.66) days in the observed frame. Coupled with the width of the Hbeta emission line in the variable spectrum, we determine a black hole mass of (7.1 +/- 1.2)x10^6 M_sun, assuming the Onken et al. normalization for reverberation-based virial masses. We also find velocity-resolved lag information within the Hbeta emission line which clearly shows infalling gas in the Hbeta-emitting region. Further detailed analysis may lead to a full model of the geometry and kinematics of broad line region gas around the central black hole in Arp 151.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
