论文标题
从银河中心附近的典型IMF制造最丰富的IMF
Making top-heavy IMFs from canonical IMFs near the Galactic Centre
论文作者
论文摘要
我们表明，在强（银河中心状的）潮汐场中的动态演化可以创建簇，似乎具有非常高的IMF。单星形成事件的潮汐破坏可能会使几个绑定的“簇”在1-2 MYR内沿着轨道的20 pc扩散。这些幸存的（子）簇倾向于包含大量巨大的恒星，而低质量的恒星倾向于沿整个“潮汐臂”散布。因此，观察在具有顶部IMF的强大潮汐场中的簇可能并不意味着由顶部较重的IMF形成的恒星。
We show that dynamical evolution in a strong (Galactic Centre-like) tidal field can create clusters that would appear to have very top-heavy IMFs. The tidal disruption of single star forming events can leave several bound `clusters' spread along 20 pc of the orbit within 1-2 Myr. These surviving (sub)clusters tend to contain an over-abundance of massive stars, with low-mass stars tending to be spread along the whole `tidal arm'. Therefore observing a cluster in a strong tidal field with a top-heavy IMF might well not mean the stars formed with a top-heavy IMF.
