Spectra and radial velocities of nuclear stars

Within the central 10pc of our Galaxy lies a dense cluster of stars. This nuclear star cluster forms a distinct component of the Galaxy, and similar nuclear star clusters are...银河系中心10秒差距（pc）范围内存在一个致密星团。该核星团（nuclear star cluster）是银河系的一个独特组成部分，类似的核星团亦存在于……