论文标题
S4716的观察 - 一颗恒星在SGR a*周围有4年轨道
Observation of S4716 -- a Star with a 4 yr Orbit around Sgr A*
论文作者
论文摘要
中央超级黑洞的银河中心和SGR A*的持续监测产生了令人惊讶且意外的发现。这与基于空间和空间的望远镜和仪器的技术演变汇总，还与图像滤波器技术（例如露西·理查森算法）的进展。当我们继续在超级质量黑洞周围的预期轨迹上追踪接近SGR A*的成员时，我们提出了一个新的恒星资源的发现，我们称之为S4716。新发现的恒星轨道sgra*在约4.0年内，可以用Nirc2（Keck），Osiris（Keck），Sinfoni（VLT），Naco（VLT）和Gravity（VLTI）检测到。 S4716的Periapse距离约为100 au，向Sgr A* AS S4711显示出等效的距离。由于S4711-S4716具有可比的轨道特性，因此这些快速移动的恒星经历了类似的动力学演化。我们将在最近发现的名为S300的新恒星与此处介绍的数据之间建立联系。此外，我们在2017年观察了与S4716的混合明星事件，并在2017年新发现了S Star S148。
The ongoing monitoring of the Galactic center and Sgr A*, the central supermassive black hole, produces surprising and unexpected findings. This goes hand in hand with the technical evolution of ground- and space-based telescopes and instruments, but also with the progression of image filter techniques such as the Lucy Richardson algorithm. As we continue to trace the members of the S cluster close to Sgr A* on their expected trajectory around the supermassive black hole, we present the finding of a new stellar source, which we call S4716. The newly found star orbits SgrA* in about 4.0 yr and can be detected with NIRC2 (Keck), OSIRIS (Keck), SINFONI (VLT), NACO (VLT), and GRAVITY (VLTI). With a periapse distance of about 100 au, S4716 shows an equivalent distance toward Sgr A* as S4711. These fast-moving stars undergo a similar dynamical evolution, since S4711-S4716 share comparable orbital properties. We will furthermore draw a connection between the recent finding of a new faint star called S300 and the data presented here. Additionally, we observed a blend-star event with S4716 and another newly identified S star S148 in 2017.
