论文标题
NGC 5273中黑洞的质量来自恒星动力建模
The Mass of the Black Hole in NGC 5273 from Stellar Dynamical Modeling
论文作者
论文摘要
我们在活动的S0 Galaxy NGC 5273中对黑洞的质量提出了新的限制。由于银河系的接近度为$ 16.6 \ pm 2.1 $ 2.1 $ mpc，我们能够使用AO Assist cassist obsisted Obervers and and Gemini nifs ands and and and and and and and and and and and and and scc and，我们能够解决并提取在中央黑洞附近的恒星附近的巨大运动。 Sauron光谱法。高分辨率HST成像使我们能够产生表面亮度分解，确定凸起和磁盘的近似质量比率，并获得磁盘倾斜度的估计值。我们使用Schwarzschild轨道式式代码构建了一个广泛的动态模型库，探索了一系列磁盘和凸起形状，晕孔群众等。我们确定了$ M _ {\ buleast} = [0.5-2] \ [0.5-2] \ times 10^{7} $ $ m _ is contress compation的黑洞质量为$ m _ {\ buleast} = [0.5-2] $ m _ {\ bullet} = [4.7 \ pm 1.6] \ times 10^{6} $ $ m _ {\ odot} $的测量。 NGC 5273是仅有的少数附近的星系之一，它们容纳了宽衬有AGN，从而可以比较来自不同质量测量技术的黑洞质量。
We present a new constraint on the mass of the black hole in the active S0 galaxy NGC 5273. Due to the proximity of the galaxy at $16.6 \pm 2.1$ Mpc, we were able to resolve and extract the bulk motions of stars near the central black hole using AO-assisted observations with Gemini NIFS, as well as constrain the large-scale kinematics using re-reduced archival SAURON spectroscopy. High resolution HST imaging allowed us to generate a surface brightness decomposition, determine approximate mass-to-light ratios for the bulge and disk, and obtain an estimate for the disk inclination. We constructed an extensive library of dynamical models using the Schwarzschild orbit-superposition code FORSTAND, exploring a range of disk and bulge shapes, halo masses, etc. We determined a black hole mass of $M_{\bullet} = [0.5 - 2] \times 10^{7}$ $M_{\odot}$, where the low side of the range is in agreement with the reverberation mapping measurement of $M_{\bullet} = [4.7 \pm 1.6] \times 10^{6}$ $M_{\odot}$. NGC 5273 is one of only a small number of nearby galaxies hosting broad-lined AGN, allowing crucial comparison of the black hole masses derived from different mass measurement techniques.
