【摘要】：基于LAMOST光譜數(shù)據(jù),選取一個太陽鄰域F/G型主序星樣本研究銀河系厚盤恒星的軌道偏心率分布.厚盤星是基于空間位置和金屬豐度[Fe/H]來證認,同時分析薄盤星的污染帶來的影響.發(fā)現(xiàn)厚盤恒星軌道偏心率分布在低偏心率(約為0.2)處有一個峰值,而且向高偏心率延伸一個尾巴(到e~0.8).把得到的厚盤恒星偏心率分布與4個厚盤形成模型進行對比,發(fā)現(xiàn)此結(jié)果與富氣體并合模型最為符合.
[Abstract]:Based on LAMOST spectral data, a solar neighborhood F / G main sequence star sample is selected to study the orbital eccentricity distribution of thick disk stars in the Milky way. The thick disk star is based on the spatial position and metal abundance [Fe/H], and the influence of the pollution of the thin disk star is analyzed at the same time. It is found that the orbital eccentricity of a thick disk star has a peak at low eccentricity (about 0.2) and extends a tail to high eccentricity (to e 鈮，

本文編號：2513598