YNAO OpenIR  > 自由探索组
Ring Galaxies Through Off-center Minor Collisions by Tuning Bulge-to-disk Mass Ratio of Progenitors
Chen, Guangwen1,2; Wu, Xufen1,2; Kong, Xu1,2; Liu WJ(刘文娟)3,4; Zhao, HongSheng5
发表期刊ASTROPHYSICAL JOURNAL
2018-09-01
卷号864期号:1页码:20
DOI10.3847/1538-4357/aad4b2
产权排序第3完成单位
收录类别SCI
关键词Galaxies: Evolution Galaxies: General Galaxies: Interactions Galaxies: Kinematics And Dynamics Methods: Numerical
摘要

Collisional ring galaxies (CRGs) are formed through off-center collisions between a target galaxy and an intruder dwarf galaxy. We study the mass distribution and kinematics of CRGs by tuning the bulge-to-disk mass ratio (B/D) for the progenitor; i.e., the target galaxy. We find that the lifetime of the ring correlates with the initial impact velocity vertical to the disk plane (i.e., nu(z0)). Three orbits for the collisional galaxy pair, on which clear and asymmetric rings form after collisions, are selected to perform the N-body simulations at different values of B/D for the progenitor. It is found that the ring structures are the strongest for CRGs with small values of B/D. The Sersic index, n, of the central remnant in the target galaxy becomes larger after collision. Moreover, the Sersic index of a central remnant strongly correlates with the initial value of B/D for the progenitor. A bulge-less progenitor results in a late-type object in the center of the ring galaxy, whereas a bulge-dominated progenitor leads to an early-type central remnant. Progenitors with B/D is an element of [0.1, 0.3] (i.e., minor bulges) leave central remnants with n approximate to 4. These results provide a possible explanation for the formation of a recently observed CRG with an early-type central nucleus, SDSS J1634+2049. In addition, we find that the radial and azimuthal velocity profiles for a ring galaxy are more sensitive to the B/D than the initial relative velocity of the progenitor.

资助项目National Key R&D Program of China[2017YFA0402600] ; Natural Science Foundation of China[NSFC 11703079] ; National Natural Science Foundation of China (NSFC)[11503025] ; National Natural Science Foundation of China (NSFC)[11421303] ; National Natural Science Foundation of China (NSFC)[11320101002] ; National Natural Science Foundation of China (NSFC)[11433005] ; Anhui Natural Science Foundation[1708085MA20] ; Fundamental Research Funds for the Central Universities ; Hundred Talents Project of Anhui Province ; National Key R&D Program of China[2015CB857004] ; Fund for Fostering Talents in Basic Science of the National Natural Science Foundation of China[J1310021] ; Light of West China Program of Chinese Academy of Sciences (CAS)
语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
ISSN0004-637X
URL查看原文
WOS记录号WOS:000443244200023
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]Adaptive Mesh Refinement ; N-body Realizations ; Cosmological Simulations ; Numerical Experiments ; Global Structure ; Galactic Bulges ; Milky-way ; Model ; Stellar ; Mergers
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17896
专题自由探索组
中国科学院天体结构与演化重点实验室
通讯作者Chen, Guangwen; Wu, Xufen
作者单位1.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People's Republic of China
2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People's Republic of China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, People's Republic of China
4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan, 650011, People's Republic of China
5.School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK
推荐引用方式
GB/T 7714
Chen, Guangwen,Wu, Xufen,Kong, Xu,et al. Ring Galaxies Through Off-center Minor Collisions by Tuning Bulge-to-disk Mass Ratio of Progenitors[J]. ASTROPHYSICAL JOURNAL,2018,864(1):20.
APA Chen, Guangwen,Wu, Xufen,Kong, Xu,Liu WJ,&Zhao, HongSheng.(2018).Ring Galaxies Through Off-center Minor Collisions by Tuning Bulge-to-disk Mass Ratio of Progenitors.ASTROPHYSICAL JOURNAL,864(1),20.
MLA Chen, Guangwen,et al."Ring Galaxies Through Off-center Minor Collisions by Tuning Bulge-to-disk Mass Ratio of Progenitors".ASTROPHYSICAL JOURNAL 864.1(2018):20.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Ring Galaxies Throug(11958KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Chen, Guangwen]的文章
[Wu, Xufen]的文章
[Kong, Xu]的文章
百度学术
百度学术中相似的文章
[Chen, Guangwen]的文章
[Wu, Xufen]的文章
[Kong, Xu]的文章
必应学术
必应学术中相似的文章
[Chen, Guangwen]的文章
[Wu, Xufen]的文章
[Kong, Xu]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Ring Galaxies Through Off-center Minor Collisions by Tuning Bulge-to-disk Mass Ratio of Progenitors.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。