犹他大学主导的TEMPOS项目通过哈勃太空望远镜的紫外观测数据，对分布在6个本地矮星系中的29颗大质量恒星进行了深入研究1。研究发现，当金属丰度低于太阳金属丰度的10%时，这些恒星的恒星风速度会急剧下降1。这一发现可能为韦伯太空望远镜观测到的早期宇宙星系的异常现象提供解释1。
项目团队由犹他大学物理与天文学系助理教授Grace Telford领导1。每颗恒星的观测耗时长达35小时1。研究还表明，在极度贫金属条件下，恒星的铁丰度差异显著，与氧丰度不一定成比例1。该研究成果已于2026年9月21日发表在《天体物理学杂志补编系列》上1。
Researchers from the University of Utah have identified a previously unknown stellar behavior that could explain some of the unexpected galaxies observed by the James Webb Space Telescope in the early universe. The team, leading the TEMPOS project, analyzed 29 massive stars across six nearby dwarf galaxies using ultraviolet observations from the Hubble Space Telescope, discovering that stellar winds dramatically weaken when metal content drops below 10 percent of the Sun's metallicity.1
The findings reveal significant variations in iron abundance among extremely metal-poor stars, with iron levels not necessarily correlating with oxygen content.1 Assistant Professor Grace Telford of the University of Utah's Department of Physics and Astronomy led the investigation, which required as much as 35 hours of Hubble observation time per individual star.1 The research was published on September 21, 2026, in The Astrophysical Journal Supplement Series, offering new insights into how stellar properties and galactic evolution function under the metal-scarce conditions that characterized the early cosmos.1
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