大质量椭圆体如何变得暗物质不足

IF 12.9 1区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Lindsay Oldham
{"title":"大质量椭圆体如何变得暗物质不足","authors":"Lindsay Oldham","doi":"10.1038/s41550-024-02398-2","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"8 10","pages":"1211-1211"},"PeriodicalIF":12.9000,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"How massive ellipticals become dark matter deficient\",\"authors\":\"Lindsay Oldham\",\"doi\":\"10.1038/s41550-024-02398-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\",\"PeriodicalId\":18778,\"journal\":{\"name\":\"Nature Astronomy\",\"volume\":\"8 10\",\"pages\":\"1211-1211\"},\"PeriodicalIF\":12.9000,\"publicationDate\":\"2024-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nature Astronomy\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.nature.com/articles/s41550-024-02398-2\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Astronomy","FirstCategoryId":"101","ListUrlMain":"https://www.nature.com/articles/s41550-024-02398-2","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

摘要

最近发现位于英仙座星系团中的大质量椭圆星系NGC 1277在5个有效半径范围内的暗物质含量低于5%,这引发了人们对这样一个天体能否在ΛCDM宇宙中形成的疑问。安娜-孔特雷拉斯-桑托斯及其同事在模拟中证明了类似的暗物质缺乏卫星椭圆星系的存在,并绘制了它们的演化历史,以确定导致它们在今天缺乏暗物质的物理过程。作者将 "三百计划 "模拟中两个暗物质最缺乏的椭圆星系(M⋆/Mtot ~ 0.85,M⋆ ~ 1011 M⊙)作为案例研究。他们发现,这两个星团一开始都有质量大得多的暗物质光环,这些光环在流入星团时被潮汐剥离了大约 2 个数量级,而恒星质量由于其更紧密的中心集中而在很大程度上保持不变。孔特雷拉斯-桑托斯等人的研究随后表明,暗物质最缺乏的系统一般都已完成了围绕其宿主的大量轨道运行,并达到了更近的周心距离。这就形成了这样一幅图景:暗物质剥离的增加与星系接近星系团中心的程度以及在星系团中心停留的时间成正比--这意味着剥离低质量矮星系的机制同样适用于大质量椭圆星系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
How massive ellipticals become dark matter deficient
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
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.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信