发表机构
Vanderbilt University; Harvard University(范德堡大学; 哈佛大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文扩展暗物质-重子可分离性框架,以近暗星系TTT J1237327+143535为例,推导动力学一致性关系,并联系球状星团与潮汐性质,为暗物质缺乏与重子耗尽系统提供统一描述与检验。
AI 中文摘要
我们将暗物质-重子可分离性条件进行扩展,证明为暗物质缺乏星系开发的同一框架自然允许一个共轭分支,该分支描述重子优先耗散。以最近发现的近暗星系TTT J1237327+143535作为实例,我们推导出一族由未知前身比例$\mu_i$参数化的动力学一致性关系,包括对$\sigma_{\rm los}$、$M_{\rm dyn}$、封闭重子分数以及动力学质量与光比值的阈值。我们进一步将可分离性框架与预期的球状星团族群联系起来,为推断的暗物质晕质量提供独立的检验。我们还利用室女座星系的潮汐特性给出了重子比例的一些界限。因此,未来对恒星运动学、气体含量和球状星团的测量可以确定该星系是否占据正可分离性分支,并检验暗物质缺乏和重子耗尽的系统是否可以在共同框架内描述。
英文摘要
We extend the Dark Matter-Baryon Separability Condition to show that the same framework developed for dark matter deficient galaxies naturally admits a conjugate branch describing preferential baryonic depletion. Using the recently discovered almost-dark galaxy TTT J1237327+143535 as a worked example, we derive a family of dynamical consistency relations parameterized by the unknown progenitor ratio $μ_i$, including thresholds for $σ_{\rm los}$, $M_{\rm dyn}$, the enclosed baryonic fraction and the dynamical mass to light ratio. We further connect the separability framework to the expected globular cluster population, providing an independent consistency test of the inferred halo mass. We also provide some bounds on the baryon ratio using the tidal properties of Virgo Cluster. Future measurements of stellar kinematics, gas content and globular clusters can therefore determine whether this galaxy occupies the positive separability branch and also test whether dark matter deficient and baryon depleted systems can be described within a common framework.
Comments11 pages, 3 figures, comments very welcome