论文标题
低表面亮度盘的黑暗和发光物质的基本特性
Fundamental properties of the dark and the luminous matter from Low Surface Brightness discs
论文作者
论文摘要
暗物质（DM）是宇宙中最大的奥秘之一。在这篇综述中，在简要讨论了DM证据以及DM现象的主要候选者和场景之后，我们将重点放在旋转盘式星系上，以特别注意低表面亮度（LSB）星系。简短地召回了过去几十年来研究的与LSB中与Baryonic物质有关的主要观察性质。接下来，通过单独和堆叠的旋转曲线的质量建模对LSB进行分析。通过通用旋转曲线（URC）方法，后者的分析在给出圆盘星系属性的全局/通用描述方面确实有效。我们显示了银河结构特性之间比例关系的LSB中的存在，并将其与不同形态学的星系相比。研究结果证实，对于所有光盘系统，发光物质（LM）和DM之间存在很强的纠缠。此外，我们报告了LSB中的径向重力加速$ g $与其Baryonic成分$ g_b $结果之间的紧密关系，以取决于测量了前者的银河半径。最后，LSB星系强烈挑战了$λ$ CDM的情况，其相对无碰撞的暗粒子，除了后者的未检测外，还有助于指导我们朝着DM现象的新场景。
Dark matter (DM) is one of the biggest mystery in the Universe. In this review, after a brief discussion of the DM evidences and the main proposed candidates and scenarios for the DM phenomenon, we focus on recent results on rotating disc galaxies giving a special attention to the Low Surface Brightness (LSB) galaxies. The main observational properties related to the baryonic matter in LSBs, investigated over the last decades, are briefly recalled. Next, the LSBs are analysed by means of the mass modelling of their rotation curves both individually and stacked. The latter analysis, via the Universal Rotation Curve (URC) method, results really powerful in giving a global/universal description of the disc galaxies properties. We show the presence in LSBs of scaling relations between the galactic structural properties and we compare them with those of galaxies of different morphologies. The findings confirm, for all disc systems, a strong entanglement between the luminous matter (LM) and the DM. Moreover, we report how in LSBs the tight relationship between their radial gravitational acceleration $g$ and their baryonic component $g_b$ results to also depend on the galactic radius at which the former have been measured. Finally, LSB galaxies strongly challenge the $Λ$CDM scenario with the relative collisionless dark particle and, alongside with the non-detection of the latter, contribute to guide us towards a new scenario for the DM phenomenon.
