A galactic pearl in a distorted shell

IF 14.3 1区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Nature Astronomy Pub Date : 2025-04-17 DOI:10.1038/s41550-025-02545-3
Bokyoung Kim
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一颗扭曲壳中的银河珍珠
这张最近的JWST图像显示了一个星系尺度的强透镜系统,由一个遥远的螺旋星系组成,它被星系团SMACSJ0028.2-7537中的一个明亮的大质量椭圆星系透镜。这张组合图像是由四个单独的图像组成的,这些图像是由JWST的近红外相机获得的,用黄色和红色表示,还有哈勃的广角相机3和高级巡天相机,用蓝色表示。环绕椭圆星系的几个蓝色弧线似乎是透镜螺旋星系的气体结构发出的扭曲光,其中还包括几个明亮的星团。螺旋星系的核心在透镜星系周围出现多次,在六点钟和两点钟位置分别可以看到两个明亮的黄色团块。由于透镜的放大,我们可以如此详细地观察这些结构。这张照片是由JWST拍摄的,作为强透镜和星团演化(SLICE)调查的一部分(PI: Guillaume Mahler/ li大学),目的是在0.2到1.9的红移范围内观察182个大质量星系团。SLICE团队试图了解星系团的质量结构,包括暗物质的分布。SLICE调查的早期结果(C. Cerny et al.)。预印本:https://arxiv.org/abs/2503.17498;2025)提供了14个大质量星系团的观测数据,红移范围从0.25到1.06。在这个早期的数据分析中,研究小组模拟了每个星系团的全球质量分布,以研究内部质量分布,尽管这张图像中对强透镜系统的详细分析没有包括在论文中。
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来源期刊
Nature Astronomy
Nature Astronomy Physics and Astronomy-Astronomy and Astrophysics
CiteScore
19.50
自引率
2.80%
发文量
252
期刊介绍: Nature Astronomy, the oldest science, has played a significant role in the history of Nature. Throughout the years, pioneering discoveries such as the first quasar, exoplanet, and understanding of spiral nebulae have been reported in the journal. With the introduction of Nature Astronomy, the field now receives expanded coverage, welcoming research in astronomy, astrophysics, and planetary science. The primary objective is to encourage closer collaboration among researchers in these related areas. Similar to other journals under the Nature brand, Nature Astronomy boasts a devoted team of professional editors, ensuring fairness and rigorous peer-review processes. The journal maintains high standards in copy-editing and production, ensuring timely publication and editorial independence. In addition to original research, Nature Astronomy publishes a wide range of content, including Comments, Reviews, News and Views, Features, and Correspondence. This diverse collection covers various disciplines within astronomy and includes contributions from a diverse range of voices.
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