2025年1月21日 · Captured in unprecedented detail by NASA’s James Webb Space Telescope (JWST) in 2022, this and other images of spiral galaxies help scientists investigate the star formation cycle in galaxies on an unprecedented new scale and provide valuable new clues to the origins of our universe.

詹姆斯·韦伯空间望远镜 （英語： James Webb Space Telescope，简称 JWST，中国大陆官方译名为 詹姆斯·韦布空间望远镜）是已發射的 紅外線 太空望遠鏡，原计划耗费5亿美元并于2007年发射升空 [8]。 但由于各种原因，导致项目严重超支，发射時間数次推迟，最新预估总耗费高达100亿美元，发射时间为美国东部时间2021年12月25日7时20分 [9]。 2019年8月28日NASA表示该望远镜首次组装完毕 [10]。 它是 欧洲空间局， 加拿大太空局 和 美国国家航空航天局 的共用计划。 …

2024年8月21日 · JWST provides new opportunities to cross-check the HST Cepheid/SNeIa distance ladder, which yields the most precise local measure of H0. We analyze early JWST subsamples (~1/4 of the HST sample) from the SH0ES and CCHP groups, calibrated by a single anchor (N4258).

5 天之前 · Figure 4: Observed HST + JWST light curve of GRB 221009A. The lines connecting the data are meant to guide the eye. The F160W measurement at t = 185 𝑡 185 t=185 italic_t = 185 days (V1) is from our difference imaging. Early HST data (t < 60 𝑡 60 t<60 italic_t < 60 days) in all filters except F110W and F814W are from A. J. Levan et al ...

4 天之前 · In the current era of JWST, we continue to uncover a wealth of information about the Universe deep into the Epoch of Reionization. In this work, we run a suite of simulations using the code 21cmSPACE, to explore the astrophysical properties of galaxies in the early Universe, and their impact on high-redshift observables. We use multi-wavelength observational data including the global 21-cm ...

2024年12月9日 · We cross-check the Hubble Space Telescope (HST) Cepheid/Type Ia supernova (SN Ia) distance ladder, which yields the most precise local H 0, against early James Webb Space Telescope (JWST) subsamples (∼1/4 of the HST sample) from SH0ES and CCHP, calibrated only with NGC 4258.

2024年4月30日 · HST has a two decade heritage of probing the chemical composition of exoplanet atmospheres through transit spectroscopy; JWST has only recently started observations, and it is already clear that its sensitivity at near- and mid-infrared wavelengths opens up new opportunities for transit spectroscopy of low-mass exoplanets and high-resolution ...

2023年11月17日 · As demonstrated by Adam Riess and colleagues, the source-separation abilities of JWST enable a stringent test of HST-derived distances, through a more tightly constrained period–luminosity ...

詹姆斯·韦伯太空望远镜 （James Webb Space Telescope，缩写 JWST）是美国航空航天局（NASA）、欧洲航天局（ESA）和加拿大航空航天局（CSA）联合研发的红外线观测用太空望远镜，以作为 哈勃望远镜 （HST）的继任者。 美国宇航局戈达德太空飞行中心正在管理开发工作。 主要的工业合作伙伴是诺斯罗普格鲁曼公司，该太空望远镜科学研究所将在发射后运行韦伯望远镜。 （从1996年开始，美国宇航局向全国招标，寻找这个极端精密的新式空间望远镜计划。 竞 …

2025年2月18日 · James Webb Space Telescope (JWST) does not use traditional CCD cameras; instead, it utilizes specialized near-infrared detectors called "HgCdTe H2RG" (Mercury Cadmium Telluride) arrays, -with the primary imaging camera , NIRCam, consisting of 10 such detector chips , each with a resolution of 2040 x 2040 pixels,