论文标题
原位大气传播如何影响IA型超新星的宇宙学约束？
How in situ atmospheric transmission can affect cosmological constraints from type Ia supernovae ?
论文作者
论文摘要
光度测量中IA型超新星颜色的测量是进入宇宙距离的关键。但是，对于将来的大规模调查，例如智利Vera Rubin天文台对空间和时间进行的大量调查，承诺的目录的庞大统计能力将使光度校准不确定性在错误预算中占主导地位，并将限制我们使用它来精确宇宙学。全面调查或季节或每个暴露的平均现场大气传播知识可以帮助达到幅度的次级精度。我们将表明，测量当地大气传播允许校正原始幅度以减少光度系统不确定性。然后，我们将通过辅助望远镜及其无频谱仪在鲁宾天文台实施这种策略。
The measurement of type Ia supernova colours in photometric surveys is the key to access to cosmological distances. But for future large surveys like the Large Survey of Space and Time undertaken by the Vera Rubin Observatory in Chile, the large statistical power of the promised catalogues will make the photometric calibration uncertainties dominant in the error budget and will limit our ability to use it for precision cosmology. The knowledge of the on-site atmospheric transmission on average for the full survey, or for season or each exposure can help reaching the sub-percent precision for magnitudes. We will show that measuring the local atmospheric transmission allows to correct the raw magnitudes to reduce the photometric systematic uncertainties. Then we will present how this strategy is implemented at the Rubin Observatory via the Auxiliary Telescope and its slitless spectrograph.
