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DOI | 10.1126/science.abe9680 |
Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago | |
Takafumi Tsukui; Satoru Iguchi | |
2021-06-11 | |
发表期刊 | Science
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出版年 | 2021 |
英文摘要 | The early assembly of galaxies is thought to have produced disturbed and asymmetric objects. Morphological features seen in nearby galaxies, such as stellar disks, bulges, and spiral arms, require time to form and would be disturbed by the frequent galaxy mergers that occurred at early times. Tsukui and Iguchi identified a distant galaxy containing a disk of gas with a spiral morphology. The galaxy also has a compact central mass concentration due to a combination of a supermassive black hole and a possible stellar bulge. These features must have formed within 1.4 billion years after the Big Bang. Science , abe9680, this issue p. [1201][1] Spiral galaxies have distinct internal structures, including a stellar bulge, a disk, and spiral arms. It is unknown when in cosmic history these structures formed. In this study, we analyzed observations of BRI 1335–0417, an intensely star-forming galaxy in the distant Universe, at a redshift of 4.41. The [C ii] gas kinematics shows a steep velocity rise near the galaxy center and has a two-armed spiral morphology, which extends from about 2 to 5 kiloparsecs in radius. We interpret these features as due to a central compact structure such as a bulge, a rotating gas disk, and either spiral arms or tidal tails. These features had formed within 1.4 billion years after the Big Bang, long before the peak of cosmic star formation. [1]: /lookup/doi/10.1126/science.abe9680 |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/329914 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Takafumi Tsukui,Satoru Iguchi. Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago[J]. Science,2021. |
APA | Takafumi Tsukui,&Satoru Iguchi.(2021).Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago.Science. |
MLA | Takafumi Tsukui,et al."Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago".Science (2021). |
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