论文标题
矮星系中冲动超新星反馈的运动学特征
Kinematic signatures of impulsive supernova feedback in dwarf galaxies
论文作者
论文摘要
冲动的超新星反馈和非标准的暗物质模型（例如自我互动暗物质（SIDM））是矮人星系尺度上主要的核心形成机制作用的两个主要竞争者。在这里，我们表明，遵循爆发恒星形成发作的冲动超新星循环在恒星的分布函数中留下了不同的特征：具有相似年龄和金属性的恒星组在相空间中会产生过度密度的壳。如果通过超新星反馈形成核心，我们可以预测与宿主光环的星形矮星系中存在此类特征。他们的系统缺勤将有利于替代暗物质模型，例如SIDM，例如主要的核心形成机制。
Impulsive supernova feedback and non-standard dark matter models, such as self-interacting dark matter (SIDM), are the two main contenders for the role of the dominant core formation mechanism at the dwarf galaxy scale. Here we show that the impulsive supernova cycles that follow episodes of bursty star formation leave distinct features in the distribution function of stars: groups of stars with similar ages and metallicities develop overdense shells in phase space. If cores are formed through supernova feedback, we predict the presence of such features in star-forming dwarf galaxies with cored host halos. Their systematic absence would favor alternative dark matter models, such as SIDM, as the dominant core formation mechanism.
