论文标题
矮人Seyfert UGC的主机银河系06728
The Host Galaxy of the Dwarf Seyfert UGC 06728
论文作者
论文摘要
我们介绍了矮人Seyfert UGC 06728的宿主星系的多色高分辨率成像。作为最低的质量黑洞，既可以用直接的质量约束和旋转约束来描述，ugc 06728是与黑洞进化模型进行比较的重要来源，但鲜为人知的是，人们对宿主Garaxy却鲜为人知。使用光学和近红外的哈勃空间望远镜成像，我们发现UGC 06728是一个禁止的宽膜状（SB0）星系，在杆末端具有突出的Ansae。我们用二维图像分解将AGN与已解决的星系分开，从而使精确的表面亮度曲线得以从星系的外边缘一直到核中衍生在所有过滤器中。基于图像中确定的51个球状群集候选样本的样本，球状簇光度函数可预测$ 32.5 \ pm3.5 $ mpc的UCG 06728的距离。将星系光度法与距离估计结合在一起，我们得出了星光校正的AGN光度，星系的绝对幅度以及对$ \ log M _ {\ star}/m _ {\ star}/m _ {\ odot} = 9.9 \ pm0.2 $的星系恒星质量的约束。
We present multi-color high-resolution imaging of the host galaxy of the dwarf Seyfert UGC 06728. As the lowest-mass black hole to be described with both a direct mass constraint and a spin constraint, UGC 06728 is an important source for comparison with black hole evolutionary models, yet little is known about the host galaxy. Using Hubble Space Telescope imaging in the optical and near-infrared, we find that UGC 06728 is a barred lenticular (SB0) galaxy with prominent ansae at the ends of the bar. We cleanly separated the AGN from the resolved galaxy with two-dimensional image decompositions, thus allowing accurate surface brightness profiles to be derived in all filters from the outer edge of the galaxy all the way into the nucleus. Based on a sample of 51 globular cluster candidates identified in the images, the globular cluster luminosity function predicts a distance to UCG 06728 of $32.5\pm3.5$ Mpc. Combining the galaxy photometry with the distance estimate, we derive a starlight-corrected AGN luminosity, the absolute magnitude of the galaxy, and a constraint on the galaxy stellar mass of $\log M_{\star}/M_{\odot}=9.9\pm0.2$.
