论文标题
与Sitelle一起搜索NGC 6946中的Supernova Light Echoes
A Search for Supernova Light Echoes in NGC 6946 with SITELLE
论文作者
论文摘要
我们介绍了NGC 6946的四个小时的光谱观测分析，而Sitelle成像傅立叶变换光谱仪在加拿大 - 弗朗西 - 弗朗西·霍瓦伊望远镜上的分析，从其十个现代的超新星中搜索了超新星光的望远镜。我们开发了一种新型的光谱搜索方法：识别窄带SN3滤波器中的负面倾斜的连续性是H $α$系列中的高度凸起的P-Cygni曲线，这将是超新星弹射器光谱的特征。我们通过寻找过去100年中NGC 6946中观察到的十个超新星中的任何一个中的光回声来测试我们的方法。我们在调查表面亮度限制限制限制1 $ \ times $ 10 $^{ - 15} $ erg/s/s/cm $^2 $/arcsec $^2 $上方没有发现光回声的证据。
We present the analysis of four hours of spectroscopic observations of NGC 6946 with the SITELLE Imaging Fourier Transform Spectrometer on the Canada-France-Hawaii Telescope, acquired to search for supernova light echoes from its ten modern supernovae. We develop a novel spectroscopic search method: identifying negatively sloped continua in the narrow-band SN3 filter as candidate highly-broadened P-Cygni profiles in the H$α$ line, which would be characteristic of the spectra of supernovae ejecta. We test our methodology by looking for light echoes from any of the ten supernovae observed in NGC 6946 in the past 100 years. We find no evidence of light echoes above the survey surface brightness limit of 1$\times$10$^{-15}$erg/s/cm$^2$/arcsec$^2$.
