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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2503.05171 |
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| _version_ | 1866909529187287040 |
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| author | Ai, Mei Zhu, Ming Yu, Nai-ping Xu, Jin-long Liu, Xiao-lan Jing, Yingjie Jiao, Qian Liu, Yao Zhang, Chuan-peng Wang, Jie Jiang, Peng |
| author_facet | Ai, Mei Zhu, Ming Yu, Nai-ping Xu, Jin-long Liu, Xiao-lan Jing, Yingjie Jiao, Qian Liu, Yao Zhang, Chuan-peng Wang, Jie Jiang, Peng |
| contents | We present the high-sensitivity and large-scale atomic hydrogen (HI) observations towards lenticular (S0) galaxy NGC 4111 using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). The column density map shows that NGC4111 and seven other different types of galaxies share a huge HI 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 HI complex. Still, the HI disk rotation direction has deviated from its stellar disk about 34.2$^{\circ}$, 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 NGC4111 is 3.1$\pm$0.7, which is lower than the average value of the Local Universe, implying that the interactions may strip its dark matter. Our results suggest that in a galaxy group environment, tidal interactions have a significant effect on galaxy features. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05171 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Formation of the dark-matter deficient S0 galaxy NGC 4111 under the tidal interactions Ai, Mei Zhu, Ming Yu, Nai-ping Xu, Jin-long Liu, Xiao-lan Jing, Yingjie Jiao, Qian Liu, Yao Zhang, Chuan-peng Wang, Jie Jiang, Peng Astrophysics of Galaxies We present the high-sensitivity and large-scale atomic hydrogen (HI) observations towards lenticular (S0) galaxy NGC 4111 using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). The column density map shows that NGC4111 and seven other different types of galaxies share a huge HI gas complex. The data also suggest that NGC 4111 is interacting with seven galaxies. Moreover, we identified a rotating gas disk associated with NGC 4111 from the HI complex. Still, the HI disk rotation direction has deviated from its stellar disk about 34.2$^{\circ}$, indicating that the NGC 4111 galaxy is undergoing a transition from a spiral galaxy to an S0 galaxy by the tidal interactions. The obtained dark matter-to-stellar mass ratio of NGC4111 is 3.1$\pm$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. |
| title | Formation of the dark-matter deficient S0 galaxy NGC 4111 under the tidal interactions |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2503.05171 |