局部臂中的一个新运动群
A new moving group in the Local Arm
摘要:
我们提出了一个在运动学、空间位置和元素丰度方面聚集的新运动群。它的空间位置在银河系本旋臂的中心附近。采用收敛点法筛选候选成员星。\textbf{ Among 206 candidate member stars, 74 are pre-main-sequence stars and some of them have stellar disks.}我们推测这些前主序星属于猎户座星云。我们认为这一运动群是由局部臂的密度波经过引起的。
英文摘要:
We present a new moving group clustered in kinematics, spatial position and elemental abundances. Its spatial position is around the center of the Local Arm of the Milky Way. A convergent point method was taken to select candidate member stars.\textbf{ Among 206 candidate member stars, 74 are pre-main-sequence stars and some of them have stellar disks.} We presume those pre-main sequence stars belong to Orion nebula. We suggest this moving group is caused by density wave of the Local Arm passing by.
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