TDCOSMO. XXVII：基于JWST的WFI2033、HE0435和PG1115的透镜模型与H₀测量
TDCOSMO. XXVII. JWST-based Lens Models and H$_0$ Measurement of WFI2033, HE0435, and PG1115
AI总结：
本研究基于JWST数据构建三个类星体的透镜模型，结合STARRED技术等推断H₀，结果与HST研究一致且离散度降低，后续将利用16个JWST目标提升H₀测量精度
AI中文摘要：
时延宇宙学为哈勃-勒梅特常数H₀提供了一条无需距离阶梯的直接途径。我们基于JWST-NIRCam/F115W成像，为三个四重成像类星体构建了宇宙学级透镜模型，分别是WFI2033-4723、HE0435-1223、PG1115+080。我们采用STARRED建模技术（该技术在我们此前对WFI2033-4723的分析中已引入），以高保真度重构JWST-NIRCam点扩散函数。我们将基于NIRCam的透镜模型、改进的外部汇聚度估计值、已发表的时延数据，以及JWST NIRSpec提供的孔径积分恒星速度弥散相结合，来推断H₀。对HE0435-1223和PG1115+080的分析采用盲法进行，而对WFI2033-4723的分析未采用盲法，因为我们是基于此前已发表的模型开展工作。为与此前基于HST的研究进行对比，我们将分析限定在无内部质量简并的情况（λ_int=1）。我们量化了改进后的成像、单孔径运动学数据以及环境测量对中心值和不确定性的影响。在平坦ΛCDM模型下，假设对Ω_m采用均匀先验，我们得到PG1115+080的H₀为71.8⁺⁹.²₋₇.⁰ λ_int km s⁻¹ Mpc⁻¹，HE0435-1223的H₀为74.2⁺⁴.²₋₄.² λ_int km s⁻¹ Mpc⁻¹，WFI2033-4723的H₀为73.4⁺³.⁴₋₄.⁴ λ_int km s⁻¹ Mpc⁻¹。将这三个透镜的结果合并后，得到H₀为73.5⁺².⁷₋₂.⁸ λ_int km s⁻¹ Mpc⁻¹，与基于HST的结果（73.6⁺².⁶₋₂.⁶ λ_int km s⁻¹ Mpc⁻¹）一致，但三个系统之间的离散度有所降低。这些模型将以分层方式纳入TDCOSMO-2026里程碑论文，其中λ_int为自由参数。最后，我们概述了即将到来的16个JWST NIRCam目标将如何进一步缩小不确定性，使H₀的精度达到百分位水平。
英文摘要：
Time-delay cosmography offers a one-step, distance-ladder-independent route to the Hubble-Lemaitre constant, H_0. We present new cosmography-grade lens models of three quadruply imaged quasars based on JWST-NIRCam/F115W imaging (WFI2033-4723, HE0435-1223, PG1115+080). We use the STARRED modeling technique, introduced in our previous analysis of WFI2033-4723, to reconstruct the complex JWST-NIRCam Point Spread Function at high fidelity. We combine NIRCam-based lens models with improved external convergence estimates, published time delays, and aperture-integrated stellar velocity dispersions from JWST NIRSpec to infer H_0. The analysis was carried out blindly for HE0435-1223 and PG1115+080, while it was not blind for WFI2033-4723, as we build upon the previous published model. For comparison with previous HST-based work, we limit our analysis to the case of no internal mass-sheet degeneracy ($λ_{\rm int}=1$). We quantify the impact of improved imaging, single-aperture kinematics, and environment measurements on central values and uncertainties. Within flat $Λ$CDM, assuming a uniform prior on $Ω_{\rm m}$, we find H_0 = 71.8$_{-7.0}^{+9.2}$ $λ_{\rm int}$ km s$^{-1}$ Mpc$^{-1}$ for PG1115+080, 74.2$_{-4.2}^{+4.2}$ $λ_{\rm int}$ km s$^{-1}$ Mpc$^{-1}$ for HE0435-1223, and 73.4$_{-4.4}^{+3.4}$ $λ_{\rm int}$ km s$^{-1}$ Mpc$^{-1}$ for WFI2033-4723. Combining the three lenses yields H_0 = 73.5$_{-2.8}^{+2.7}$ $λ_{\rm int}$ km s$^{-1}$ Mpc$^{-1}$, consistent with HST-based results (73.6$_{-2.6}^{+2.6}$ $λ_{\rm int}$ km s$^{-1}$ Mpc$^{-1}$), but with reduced scatter between the three systems. These models will be incorporated in the TDCOSMO-2026 milestone paper with free $λ_{\rm int}$ in a hierarchical fashion. We close by outlining how 16 forthcoming JWST NIRCam targets will further tighten uncertainties toward percent-level precision on H_0.
