论文标题
V1311 ORI的家族：年轻的六重系统还是迷你群集？
The family of V1311 Ori: a young sextuple system or a mini-cluster?
论文作者
论文摘要
在附近恒星的Gaia目录中鉴定出了一个包含V1311 ORI的四个活性M型矮人的紧凑型组。它位于39 PC的距离，可能与运动学，等距年龄和其他青年指标（Halpha发射，锂的存在和快速旋转）有关，可能与Beta Pictoris和32个ORI移动组有关。最亮的恒星A是已知的近距离二进制，确定了初步的80年视觉光谱轨道。 Star B is resolved here into a 0.08" pair, and the faintest stars C and D are probably single. Considering the non-hierarchical configuration with projected separations of ~10 kau, this could be either a young sextuple system or a bound but dynamically unstable mini-cluster (trapezium) that avoided disruption so far. This pre-main-sequence system bridges the gap between moving groups and wide hierarchies.
A compact bound group of four active M-type dwarfs containing V1311 Ori is identified in the Gaia catalog of nearby stars. Located at a distance of 39 pc, it is likely related to the beta Pictoris and 32 Ori moving groups by kinematics, isochronal age, and other indicators of youth (Halpha emission, presence of lithium, and fast rotation). The brightest star A is a known close binary, for which a preliminary 80-yr visual-spectroscopic orbit is determined. Star B is resolved here into a 0.08" pair, and the faintest stars C and D are probably single. Considering the non-hierarchical configuration with projected separations of ~10 kau, this could be either a young sextuple system or a bound but dynamically unstable mini-cluster (trapezium) that avoided disruption so far. This pre-main-sequence system bridges the gap between moving groups and wide hierarchies.
