论文标题
米尔格罗米亚圆盘星系的高估倾斜：超底层Galaxy AGC 114905
Overestimated inclinations of Milgromian disc galaxies: the case of the ultradiffuse galaxy AGC 114905
论文作者
论文摘要
我们在富含气体的圆盘银河系的Milgromian动力学（MOND）框架中介绍了具有类似于AGC 114905的特性的元素中的流体动力学模拟，最近被认为具有与MOND预测不一致的旋转曲线（RC）。我们的第一个模型孤立地考虑了银河系，而我们的第二个模型包括$ 0.05 \，a _ {_ 0} $的外部字段，这是来自大规模结构的估计重力场。我们表明，面对面视图中的异用量可能与50％水平的圆形不同。这可能会误导观察者高估光盘和天空飞机之间的倾斜度$ i $。由于RCS要求校正系数为$ 1/\ SIN I $，因此实际的RC可能比观察者报道的要高得多。这种合理地将AGC 114905与MOND期望相协调。
We present hydrodynamical star-forming simulations in the Milgromian dynamics (MOND) framework of a gas-rich disc galaxy with properties similar to AGC 114905, which has recently been argued to have a rotation curve (RC) that is inconsistent with the MOND prediction. Our first model considers the galaxy in isolation, while our second model includes an external field of $0.05 \, a_{_0}$, the estimated gravitational field from large-scale structure. We show that isophotes in the face-on view can differ from circular at the 50% level. This could mislead observers into overestimating the inclination $i$ between disc and sky planes. Because RCs require a correction factor of $1/\sin i$, the actual RC could be much higher than reported by observers. This plausibly reconciles AGC 114905 with MOND expectations.
