Formation of the Dark Matter-Deficient S0 Galaxy NGC 4111 under the Tidal Interactions

被引：0

作者：

Ai, Mei ^{[1
,2
]}

Zhu, Ming ^{[1
,2
]}

Yu, Nai-ping ^{[1
,2
]}

Xu, Jin-long ^{[1
,2
]}

Liu, Xiao-lan ^{[1
,2
]}

Jing, Yingjie ^{[1
]}

Jiao, Qian ^{[3
]}

Liu, Yao ^{[4
,5
]}

Zhang, Chuan-peng ^{[1
,2
]}

Wang, Jie ^{[1
]}

Jiang, Peng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing, Peoples R China

[2] Guizhou Univ, Guizhou Radio Astron Observ, Guiyang 550000, Peoples R China

[3] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Peoples R China

[4] Qiannan Normal Univ Nationalities, Sch Phys & Elect, Longshan Rd, Tuyun 558000, Peoples R China

[5] Qiannan Key Lab Radio Astron, Duyun 558000, Guizhou, Peoples R China

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2025年 / 982卷 / 02期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

ATLAS(3D) PROJECT; DWARF GALAXIES; STELLAR MASS; CLUSTERS; SPIRALS; ORIGIN; TRANSFORMATION; LUMINOSITY; MORPHOLOGY; EVOLUTION;

D O I：

10.3847/2041-8213/adbeee

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present high-sensitivity and large-scale atomic hydrogen (H i) observations toward lenticular (S0) galaxy NGC 4111 using the Five-hundred-meter Aperture Spherical Radio Telescope. The column-density map shows that NGC 4111 and seven other different types of galaxies share a huge H i gas complex. The data also suggest that NGC 4111 is interacting with seven galaxies. Moreover, we identified a rotating gas disk associated with NGC 4111 from the H i complex. Still, the H i disk rotation direction has deviated from its stellar disk by about 34 .degrees 2, indicating that the NGC 4111 galaxy is undergoing a transition from a spiral galaxy to an S0 galaxy by the tidal interactions. The obtained dark matter to stellar mass ratio of NGC 4111 is 3.1 +/- 0.7, which is lower than the average value of the local Universe, implying that the interactions may strip its dark matter. Our results suggest that in a galaxy group environment, tidal interactions have a significant effect on galaxy features.

引用

页数：7

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