国际研究团队在银河系外首次发现了球状星团恒星流，这一突破性发现为测量星系暗物质分布提供了全新方法。1由哥本哈根大学博士生Julie Kiel Holm和DTU航天学副教授Sarah Pearson领导的研究团队在超扩散星系UGC9050-Dw1内发现了这一恒星流。1
Julie Kiel Holm表示："我们发现了另一个星系中的球状星团恒星流。这是第一次在我们自己的星系银河系之外观测到这样的流，这使得这个发现特别令人兴奋。"1
该研究成果已发表在《自然》杂志上，1这一发现标志着利用恒星流探测银河系外星系暗物质分布成为可能。1鉴于暗物质约占宇宙总物质的80-85%，1这项研究为理解宇宙结构提供了重要工具。预计随着Euclid太空望远镜和Nancy Grace Roman太空望远镜的应用，可检测的恒星流数量将大幅增加。1该研究获得了Villum Foundation和European Research Council的资金支持。1
An international research team led by doctoral student Julie Kiel Holm of the University of Copenhagen and Sarah Pearson, associate professor at DTU Space, has discovered the first globular cluster stellar stream outside the Milky Way within the ultra-diffuse galaxy UGC9050-Dw1 1. This discovery, published in Nature, establishes a novel method for measuring the distribution of dark matter in galaxies beyond our own, providing a new tool for studying dark matter, which comprises approximately 80-85% of the universe's total matter 1.
The stellar stream represents a significant breakthrough in extragalactic astronomy. "We found a globular cluster stellar stream in another galaxy," Holm explained. "This is the first time such a stream has been observed outside our own Milky Way galaxy, which makes this discovery particularly exciting" 1. The findings were supported by funding from the Villum Foundation and the European Research Council 1.
Looking ahead, the team anticipates that future observations from the Euclid space telescope and the Nancy Grace Roman space telescope will substantially increase the number of detectable stellar streams 1.
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