Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aao1858 |
A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology | |
Mueller, Oliver1; Pawlowski, Marcel S.2; Jerjen, Helmut3; Lelli, Federico4 | |
2018-02-02 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 359期号:6375页码:534-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; USA; Australia; Germany |
英文摘要 | The Milky Way and Andromeda galaxies are each surrounded by a thin plane of satellite dwarf galaxies that may be corotating. Cosmological simulations predict that most satellite galaxy systems are close to isotropic with random motions, so those two well-studied systems are often interpreted as rare statistical outliers. We test this assumption using the kinematics of satellite galaxies around the Centaurus A galaxy. Our statistical analysis reveals evidence for corotation in a narrow plane: Of the 16 Centaurus A satellites with kinematic data, 14 follow a coherent velocity pattern aligned with the long axis of their spatial distribution. In standard cosmological simulations, <0.5% of Centaurus A-like systems show such behavior. Corotating satellite systems may be common in the universe, challenging small-scale structure formation in the prevailing cosmological paradigm. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423795800033 |
WOS关键词 | TIDAL DWARF GALAXIES ; MILKY-WAY SATELLITES ; LOCAL GROUP ; THIN PLANE ; ANISOTROPIC DISTRIBUTION ; TRANSVERSE VELOCITY ; ANDROMEDA GALAXY ; PROPER MOTIONS ; M31 ; SYSTEM |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/197902 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland; 2.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA; 3.Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia; 4.ESO, Karl Schwarschild Str 1, D-85748 Garching, Germany |
推荐引用方式 GB/T 7714 | Mueller, Oliver,Pawlowski, Marcel S.,Jerjen, Helmut,et al. A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology[J]. SCIENCE,2018,359(6375):534-+. |
APA | Mueller, Oliver,Pawlowski, Marcel S.,Jerjen, Helmut,&Lelli, Federico.(2018).A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology.SCIENCE,359(6375),534-+. |
MLA | Mueller, Oliver,et al."A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology".SCIENCE 359.6375(2018):534-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论