标题： 超亮超新星的restframe紫外光 -- I. 作为宇宙探测器的潜力 显示英文标题

标题： The restframe ultraviolet of superluminous supernovae -- I. Potential as cosmological probes

摘要： 超级亮超新星（SLSNe）已被探测到$z\sim4$，并且使用当前和即将出现的设施可以探测到$z\gtrsim15$。SLSNe 的紫外线亮度极高，因此$z\gtrsim7$处的天体只能通过其本征紫外线并通过光学和红外设备检测到。SLSNe 在恒星和星系演化多个领域具有极大的实用性。 在这里，我们探讨了 SLSNe I 型作为高红移宇宙距离指示器在本征紫外线中的潜在用途。利用红移范围内的 SLSNe I 样本$1\lesssim z\lesssim 3$，我们研究了峰值绝对星等与 SLSNe I 光变曲线的上升时间、颜色和衰减率之间的相关性，该星等位于一个合成的中心波长为 250 纳米的紫外滤光片内。 我们观察到$M_0(250)$和上升时间之间存在线性相关性，内在散度为 0.29。有趣的是，通过消除那些在其光变曲线上显示出峰值之前的“隆起”的 SLSNe，这种相关性进一步增强（$\sigma_{int} \approx 0.2$）。这一结果暗示，“波纹状” SLSNe 可能属于不同的群体。 峰值亮度和颜色指数之间观察到了较弱的相关性。与在光学带中通常发现的情况相反，未发现紫外峰值亮度与衰减率之间的关系。这里发现的相关性令人鼓舞，为使用标准关系在高红移条件下将 SLSNe 作为宇宙探针提供了希望。 我们还强调了早期且一致的测光数据对于约束光变曲线特性的重要性。 显示英文摘要

摘要： Superluminous supernovae (SLSNe) have been detected to $z\sim4$ and can be detected to $z\gtrsim15$ using current and upcoming facilities. SLSNe are extremely UV luminous, and hence objects at $z\gtrsim7$ are detected exclusively via their rest-frame UV using optical and infrared facilities. SLSNe have great utility in multiple areas of stellar and galactic evolution. Here, we explore the potential use of SLSNe type-I as high-redshift cosmological distance indicators in their rest-frame UV. Using a SLSNe-I sample in the redshift range $1\lesssim z\lesssim 3$, we investigate correlations between the peak absolute magnitude in a synthetic UV filter centered at 250 nm and rise time, colour and decline rate of SLSNe-I light curves. We observe a linear correlation between $M_0(250)$ and the rise time with an intrinsic scatter of 0.29. Interestingly, this correlation is further tightened ($\sigma_{int} \approx 0.2$) by eliminating those SLSNe which show a pre-peak bump in their light curve. This result hints at the possibility that the "bumpy" SLSNe could belong to a different population. Weak correlations are observed between the peak luminosity and colour indices. No relationship is found between UV peak magnitude and the decline rate in contrast to what is typically found in optical band. The correlations found here are promising, and give encouraging insights for the use of SLSNe as cosmological probes at high redshifts using standardising relations in the UV. We also highlight the importance of early, and consistent, photometric data for constraining the light curve properties.