Characterizing the Physical Properties of High-redshift SN Ia Host Galaxies

该计划的目标是利用暗能量调查(DES)超新星样本来研究超新星候选的光度分类(即根据超新星在不同波长的光的出现情况对超新星进行分类)，并研究超新星亮度和宿主星系属性之间的关系。由于观测到的超新星性质及其爆炸的环境范围广泛，大样本将使对系统不确定性的详细研究成为可能，从而改进对宇宙膨胀历史的测量。这项工作的更广泛影响包括培养本科生和研究生。PI还将与高级本科生合作，创建新的课堂演示和结构化学习活动，以帮助改革宾夕法尼亚大学的入门物理课程。

The goal of this program is to use the Dark Energy Survey (DES) supernova sample to study photometric classification of supernova candidates (i.e. classifying supernovae based on how they appear at different wavelengths of light) and to study correlations between supernova brightness and host galaxy properties. The large sample will enable detailed studies of systematic uncertainties due to the wide range of observed supernova properties and the environment they explode in, leading to improved measurements of the expansion history of the Universe. Broader impacts of the work include training of undergraduate and graduate students. The PI will also work with advanced undergraduate students to create new in-class demonstrations and structured learning activities that will help reform the introductory physics classes at Penn.