论文标题
Lamost-Gaia中超级金属恒星的联合旋转起源的证据：在PHI与LZ平面中具有相似斜率的多个山脊
Evidence for Co-rotation Origin of Super Metal Rich Stars in LAMOST-Gaia: Multiple Ridges with a Similar Slope in phi versus Lz Plane
论文作者
论文摘要
人们认为太阳能街区的超级金属富含金属（SMR）的恒星被认为是在内部磁盘中诞生的，并通过径向迁移来到现在的位置，这在银河棒的共振共振（CR）中最为强烈。在这项工作中，我们通过检测中位数VR编码的PHI与LZ空间中的六个脊和起伏，显示了Lamost -Gaia中SMR恒星的CR起源的证据。 Monario等人的模型预测了大型慢银河棒的CR模型。我们首次显示，在此斜率之后，两个外部和宽阔的起伏的角度从-10度到20度的方位角变化，为-18 km/s。波浪状模式具有大幅度外CR外的幅度大，第二起伏的巨大峰表明，除了银河棒的CR的显着影响外，射手座矮星银河与磁盘的次要合并可能起着作用。
Super metal-rich (SMR) stars in the solar neighborhood are thought to be born in the inner disk and came to present location by radial migration, which is most intense at the co-rotation resonance (CR) of the Galactic bar. In this work, we show evidence for the CR origin of SMR stars in LAMOST-Gaia by detecting six ridges and undulations in the phi versus Lz space coded by median VR, following a similar slope of -8 km/s kpc/deg. The slope is predicted by Monario et al.'s model for CR of a large and slow Galactic bar. For the first time, we show the variation of angular momentum with azimuths from -10 deg to 20 deg for two outer and broad undulations with negative VR around -18 km/s following this slope. The wave-like pattern with large amplitude outside CR and a wide peak of the second undulations indicate that minor merger of the Sagittarius dwarf galaxy with the disk might play a role besides the significant impact of CR of the Galactic bar.
