银河系双星团识别与分类标准成功构建

Core Insights - The research team from the Xinjiang Astronomical Observatory and Shanghai Astronomical Observatory has completed a large-scale systematic study of binary star clusters in the Milky Way, establishing new identification and classification standards for these clusters, which have been published in the international journal "Astronomy and Astrophysics" [1][2] Group 1: Research Findings - The team identified 400 candidate binary star cluster systems, categorizing them into three types: primordial binary clusters, tidal capture/resonance capture systems, and optical pairs [2] - 61% of the candidate binary clusters show high consistency in age and kinematics, supporting the conclusion that they originated from the same giant molecular cloud [2] - 83% of the star cluster pairs exhibit significant tidal interactions, indicating a strong gravitational relationship [2] Group 2: Methodology and Innovation - The research team utilized high-precision astrometric data from the Gaia satellite and established a quantitative standard for spatial and velocity proximity from a statistical perspective [1][2] - The feasibility of the established standard was validated through random simulation samples, showcasing the innovative approach taken in this research [1] Group 3: Implications and Theoretical Support - The study suggests that the "pair formation" of star clusters may be an important pathway for star formation, providing key observational evidence for the formation mechanisms and dynamical evolution of multiple star cluster systems [2] - Approximately 17% of star clusters are currently in binary or multiple star systems, and about 10% may have originated from the same giant molecular cloud, aligning closely with previous theoretical predictions and observational estimates [2]