Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago

doi:10.1126/science.abe9680

GSTDTAP > 气候变化

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
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
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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).