A New Moving Group in the Local Arm

Abstract

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. 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.

Astronomy from Dome A in Antarctica

“…They also found a linear relationship between flare decay time and total duration. The same group also carried out a similar analysis of the 2016 AST3-2 data of exoplanet transit search in the CHESPA program, 20 stellar flares from different sources were identified (Liang et al 2020). They were able to model the stellar flares to obtain their properties, including duration, amplitude, energy, and skewness, for future study.…”