论文标题
依赖温度的IMF I：光度模板拟合的含义
Implications of a Temperature Dependent IMF I: Photometric Template Fitting
论文作者
论文摘要
从恒星形成的理论模型中不应期望普遍的恒星初始质量功能（IMF），但是发现可变IMF的明确观察证据很少。在本文中，将IMF的参数化引入了COSMOS2015目录的光度模板拟合中。由此产生的最佳拟合模板表明，IMF的系统变化，大多数星系表现出最高的恒星种群，而不是银河系。在固定的红移下，只发现了一小部分IMF，随着红移的增加，典型的IMF逐渐成为顶级的高温。此外，将Ulirgs，静态和星形星系的亚群与出色的人口反馈的预测进行了比较，并显示出与灰尘温度演变的明显定性相似之处。
A universal stellar initial mass function (IMF) should not be expected from theoretical models of star formation, but little conclusive observational evidence for a variable IMF has been uncovered. In this paper, a parameterization of the IMF is introduced into photometric template fitting of the COSMOS2015 catalog. The resulting best-fit templates suggest systematic variations in the IMF, with most galaxies exhibiting top-heavier stellar populations than in the Milky Way. At fixed redshift, only a small range of IMFs are found, with the typical IMF becoming progressively top-heavier with increasing redshift. Additionally, subpopulations of ULIRGs, quiescent- and star-forming galaxies are compared with predictions of stellar population feedback and show clear qualitative similarities to the evolution of dust temperatures.
