论文标题
IA型超新星型光曲线的比较和光学曲线与Swift Ultra-Violet/光学望远镜的比较
Comparisons of Type Ia Supernova Light Curves in the UV and Optical with the Swift Ultra-Violet/Optical Telescope
论文作者
论文摘要
我们使用Swift Ultra-Violet/光学望远镜的观测值检查了紫外线中97型IA型超新星附近97型IA型超新星的光曲线参数。我们的光曲线模型使用了模板的线性组合，这些组合基于SNE IA光学光度法的功能主成分分析。用于拟合中的每个主要组件的权重捕获光曲线属性的某些方面。我们发现，跨滤波器的主成分得分的总体变异性几乎没有差异。我们还发现某些过滤器和PC组件之间的相关性，表明紫外线和光学特性似乎是捆绑在一起的。这是紫外线SNE IA分析中的一个有希望的步骤，并表明紫外线曲线可用于推断光学特性，为将来的宇宙学研究铺平了道路。
We examine the light curve parameters of 97 nearby Type Ia supernovae in the ultraviolet and optical using observations from the Swift Ultra-Violet/Optical Telescope. Our light curve models used a linear combinations of templates, which were based on Functional Principal Component Analysis of the optical photometry of SNe Ia. The weights for each principal component used in the fit capture certain aspects of the light curve properties. We find that there is little difference in the overall variability of principal component scores across filters. We also find correlations between certain filters and PC components, indicating that the UV and optical properties seem to be tied together. This is a promising step in UV SNe Ia analysis, and suggests that UV light curves may be used to infer optical properties, paving the way for future cosmological studies.
