AI 中文总结
该研究对首颗多像超亮超新星SN 2025wny开展空间观测，结合HST与JWST数据表征透镜结构及超新星光谱能量分布，为时间延迟宇宙学及H0测量提供观测基础。
AI 中文摘要
我们报告了对红移z_SN=2.0151的I型超亮超新星（SLSN-I）SN 2025wny的空间后续观测，该超新星被红移z_G1=0.3755和z_G2=0.3766的两个星系引力透镜化，形成五个可分辨的像。SN 2025wny是首颗被发现的强引力透镜化SLSN，也是首颗可同时进行测光和光谱时间延迟测量的星系尺度透镜化超新星，由此为精确宇宙学及宇宙恒星形成峰值期附近恒星爆炸的研究打开了新的观测窗口。我们的后续观测包括两个 epoch 的哈勃空间望远镜（HST）成像，以及詹姆斯·韦布空间望远镜（JWST）获取的近红外成像与光谱。基于这些数据，我们对五个可分辨的超新星像、宿主星系和两个透镜星系测量了精确天体测量和多波段测光：HST提供了准确的相对像位置和静止帧紫外测光，JWST则提供了互补的近红外成像与高信噪比探测静止帧光学的光谱，二者共同实现了对透镜结构和超新星光谱能量分布在宽波长范围内的详细表征。本文呈现的数据为配套的超新星性质分析、透镜建模及时间延迟宇宙学提供了观测基础，包括测量哈勃常数H0所需的天体测量、测光和光谱信息。
英文摘要
We present space-based follow-up observations of the superluminous Type I supernova (SLSN-I) SN 2025wny at redshift $z_{SN}=2.0151$, gravitationally lensed by two galaxies at redshifts $z_{G1}=0.3755$ and $z_{G2}=0.3766$ into five resolved images. SN 2025wny is the first strongly lensed SLSN discovered and the first galaxy-scale lensed supernova for which both photometric and spectroscopic time-delay measurements are feasible. As such, it opens a new observational window for precision cosmology and the study of stellar explosions near the epoch of peak cosmic star formation. Our follow-up observations comprise two epochs of Hubble Space Telescope (HST) imaging, together with near-infrared imaging and spectroscopy obtained with the James Webb Space Telescope (JWST). From these data, we measure precise astrometry and multi-band photometry for the five resolved supernova images, the host galaxy, and the two deflecting galaxies. HST provides accurate relative image positions and rest-frame ultraviolet photometry, while JWST delivers complementary near-infrared imaging and spectroscopy probing the rest-frame optical at high signal-to-noise ratio. Together they yield a detailed characterization of both the lensing configuration and the supernova spectral energy distribution over a broad wavelength range. The data presented here provide the observational foundation for the accompanying analyses of the supernova properties, lens modeling, and time-delay cosmography, including the astrometric, photometric, and spectroscopic information required to measure $H_0$.
CommentsSubmitted to the ApJ Focus Issue on SN 2025wny (Paper I)
