AI 中文总结
该研究利用JADES瞬态巡天样本，通过模拟等方法得出红移z~2 - 5范围内的体积超新星率，包括CC超新星和SN Ia率，全样本CC超新星率有变化，且测量了SN Ia率，为高红移宇宙超新星率研究提供了数据，未来巡天将进一步完善。
AI 中文摘要
JADES瞬态巡天（JTS）在JADES深场中识别出83颗超新星候选体，该深场约25平方角分，有深度（约30星等）的多波段、多时期JWST/NIRCam覆盖。利用此样本得出红移z~2 - 5范围内首批体积核心坍缩（CC）超新星和Ia型超新星（SN Ia）率。许多超新星通过单时期测光分类，模拟并分类约23000个CC超新星和SN Ia模拟SED以量化单SED分类精度随红移的变化。报告了两个样本的一致率，全样本CC超新星率随红移有变化，还测量了全样本SN Ia率。未来JWST和罗曼太空望远镜的高红移超新星巡天将扩大样本并提供更有力约束。
英文摘要
The JADES Transient Survey (JTS) identified 83 supernova (SN) candidates in the JADES Deep Field, a $\sim$25 arcmin$^2$ region with deep ($\sim$30 mag) multi-band, multi-epoch JWST/NIRCam coverage. We use this sample to derive the first volumetric core-collapse (CC) SN and Type Ia (SN Ia) rates in the $z$$\sim$2-5 range. Many of these SNe are photometrically classified from single-epoch photometry (i.e., single spectral energy distributions (SEDs)), so we simulate and classify $\sim$23,000 CC SN and SN Ia mock SEDs over 0.7$\leq$$z$$\leq$5 to quantify single-SED classification accuracy as a function of redshift. We report consistent rates for two samples: (1) the full JTS sample, including single-SED classifications, and (2) the "gold" sample, restricted to sources classified spectroscopically or with multi-epoch light curves. In units of 10$^{-4}$ CC SNe yr$^{-1}$ Mpc$^{-3}$, the full sample CC SN rates are 6.2$^{+2.2}_{-1.7}$ at 2.06$\leq$$z$$<$2.78 and 4.1$^{+1.5}_{-1.1}$ at 2.78$\leq$$z$$\leq$5.06, broadly consistent with the expectations from the galaxy luminosity-based measurements of the cosmic star formation rate density. Our full sample rates tentatively exhibit the predicted decline beyond cosmic noon, providing the first direct observational indication of this behavior. A companion paper, C. Vassallo et al., presents a more detailed comparison. We measure a full sample SN Ia rate of 0.3$^{+0.3}_{-0.2}$$\times$10$^{-4}$ SNe Ia yr$^{-1}$ Mpc$^{-3}$ at 1.92$\leq$$z$$<$3.60. Future high-$z$ SN surveys with JWST and the Roman Space Telescope will expand these samples and provide more robust constraints on SN rates in the high-$z$ Universe.
Comments43 pages, 14 figures, 5 tables. Submitted to ApJ. Companion paper C. Vassallo et al. also submitted to ApJ
