论文标题
卫星数量与延伸到本地组的卫星数量与重型凸起与总比率之间的相关性
A correlation between the number of satellites and the baryonic bulge-to-total ratio extending beyond the Local Group
论文作者
论文摘要
最近观察到围绕当地宇宙中几个类似乳状的类星系的田地的观察已经变得足够深，以便研究标准LCDM宇宙学模型的预测，直到本地组以外的小尺度。是由观察到的矮卫星数量（N_SAT）与当地组三个主要星系的凸起到止血的重型质量比（B/T）之间的相关性的动机M101及其确认的卫星，我们发现N_SAT和B/T之间存在很强而显着的相关性。这与迄今为止发表的宇宙模拟的结果相矛盾，该宇宙学模拟报告了LCDM模型中N_SAT和B/T之间没有相关性的结果。我们得出的结论是，根据当前数据，N_SAT与B/T相关性不再仅限于本地组。
Recent observations of the fields surrounding a few Milky-Way-like galaxies in the local Universe have become deep enough to enable investigations of the predictions of the standard LCDM cosmological model down to small scales outside the Local Group. Motivated by an observed correlation between the number of dwarf satellites (N_sat) and the bulge-to-total baryonic mass ratios (B/T) of the three main galaxies in the Local Group, i.e. the Milky Way, Andromeda, and Triangulum (M33), we use published data of three well-studied galaxies outside the Local Group, namely M81, Centaurus A, and M101, and their confirmed satellites, and we find a strong and significant correlation between N_sat and B/T. This presents itself in contradiction with the hitherto published results from cosmological simulations reporting an absence of a correlation between N_sat and B/T in the LCDM model. We conclude that, based on the current data, the N_sat vs. B/T correlation is no longer a property confined to only the Local Group.
