论文标题
SPARC星系的暗物质光环模型的全面目录
A comprehensive catalog of dark matter halo models for SPARC galaxies
论文作者
论文摘要
We present rotation curve fits to 175 late-type galaxies from the Spitzer Photometry & Accurate Rotation Curves (SPARC) database using seven dark matter (DM) halo profiles: pseudo-isothermal (pISO), Burkert, Navarro-Frenk-White (NFW), Einasto, Di Cintio (2014, DC14), coreNFW, and a new半经验概况名为Lucky13。我们使用马尔可夫链蒙特卡洛方法在恒星质量与光比，星系距离，磁盘倾斜度，晕圈浓度和光晕质量（以及Einasto的附加形状参数）上进行边缘化。我们发现，诸如DC14和Burkert轮廓之类的Cored Halo模型通常比Cuspy NFW曲线更适合旋转曲线。曾经作为贝叶斯先前施加的所有光环谱恢复了来自丰度匹配的恒星质量质量关系，而任何光晕模型均未详细复制光晕质量浓缩关系。我们在机器可读表中提供了一组广泛的数字以及最佳拟合参数，以促进模型比较和DM光晕性能的探索。
We present rotation curve fits to 175 late-type galaxies from the Spitzer Photometry & Accurate Rotation Curves (SPARC) database using seven dark matter (DM) halo profiles: pseudo-isothermal (pISO), Burkert, Navarro-Frenk-White (NFW), Einasto, Di Cintio (2014, DC14), coreNFW, and a new semi-empirical profile named Lucky13. We marginalize over stellar mass-to-light ratio, galaxy distance, disk inclination, halo concentration and halo mass (and an additional shape parameter for Einasto) using a Markov Chain Monte Carlo method. We find that cored halo models such as the DC14 and Burkert profiles generally provide better fits to rotation curves than the cuspy NFW profile. The stellar mass-halo mass relation from abundance matching is recovered by all halo profiles once imposed as a Bayesian prior, whereas the halo mass-concentration relation is not reproduced in detail by any halo model. We provide an extensive set of figures as well as best-fit parameters in machine-readable tables to facilitate model comparison and the exploration of DM halo properties.
