Dark matter phenomena in rotationally supported galaxies exhibit a characteristic acceleration scale of g _†≈1.2נ10⁻¹⁰ms⁻². Whether this acceleration is a manifestation of a universal scale, or merely an emergent property with an intrinsic scatter, has been debated in the literature. Here we investigate whether a universal acceleration scale exists in dispersion-supported galaxies using two uniform sets of integral field spectroscopy (IFS) data from SDSS-IV MaNGA and ATLAS^3D. We apply the spherical Jeans equation to 15 MaNGA and 4 ATLAS^3D slow-rotator E0 (i.e.,nearly spherical) galaxies. Velocity dispersion profiles for these galaxies are well determined with observational errors under control. Bayesian inference indicates that all 19 galaxies are consistent with a universal acceleration of ms⁻². Moreover, all 387 data points from the radial bins of the velocity dispersion profiles are consistent with a universal relation between the radial acceleration traced by dynamics and that predicted by the observed distribution of baryons. This universality remains if we include 12 additional non-E0 slow-rotator elliptical galaxies from ATLAS. Finally, the universal acceleration from MaNGA and ATLAS^3D is consistent with that for rotationally supported galaxies, so our results support the view that dark matter phenomenology in galaxies involves a universal acceleration scale.

在旋转地支承星系暗物质现象表现出的特性加速度规模克 _†往最≈1.2נ10 ^-10毫秒^-2。在文献中已经争论了这种加速是普遍尺度的体现，还是仅仅是具有内在分散性的新兴属性。在这里，我们使用SDSS-IV MaNGA和ATLAS ^3D的两组均匀的积分场光谱（IFS）数据，研究了弥散支持星系中是否存在通用加速度标度。我们将球面Jeans方程应用于15 MaNGA和4 ATLAS ^3D慢转子E0（即近球形）星系。这些星系的速度色散分布图可以很好地确定，并在控制下观察到误差。贝叶斯推断表明所有19个星系都与ms ^-2的普遍加速度一致。此外，来自速度色散分布图的径向区间的所有387个数据点与动力学跟踪的径向加速度与重子的观测分布所预测的径向加速度之间的通用关系一致。如果我们包括来自ATLAS的12个其他非E0慢旋转椭圆形星系，则这种通用性仍然存在。最后，MaNGA和ATLAS ^3D的普遍加速 与旋转支撑星系相一致，因此我们的研究结果支持这样的观点，即星系中的暗物质现象学涉及普遍的加速尺度。