An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope
We present first-light deep H α imaging taken with the Nanshan 1 m wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy Survey. The H α image shows ongoing star formation...
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IOP Publishing
2025-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/adeb53 |
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| author | Cheng Cheng Jia-Sheng Huang Peng Wei Ali Esamdin Guojie Feng Zhi-Xiang Zhang Haojing Yan Wei Du Pei Zuo Zijian Li Gustavo Orellana-González Letian Wang Yong Wang Abdusamatjan Iskandar Shahidin Yaqup |
| author_facet | Cheng Cheng Jia-Sheng Huang Peng Wei Ali Esamdin Guojie Feng Zhi-Xiang Zhang Haojing Yan Wei Du Pei Zuo Zijian Li Gustavo Orellana-González Letian Wang Yong Wang Abdusamatjan Iskandar Shahidin Yaqup |
| author_sort | Cheng Cheng |
| collection | DOAJ |
| description | We present first-light deep H α imaging taken with the Nanshan 1 m wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy Survey. The H α image shows ongoing star formation not only inside the galaxy but also in an H I cloud in the eastern H I tail, which is roughly 16 kpc away from the main galaxy. The HST images reveal several ultrablue compact objects (F555W − F814W < −0.5 mag, FWHM ∼ 0 $\mathop{.}\limits^{\unicode{x02033}}$ 2) in the H α bright region, aligned with the H I tail, suggesting the presence of young open cluster candidate in the H I tail. Our results suggest that wide field H α imaging is a valuable tool for investigating recent star formation in the extended regions of NGC 4258. Furthermore, the star formation in diffuse H I tails could highlight an potential aspect of galaxy stellar halo formation, warranting further investigation of the impact of star formation in halos on galaxy evolution. |
| format | Article |
| id | doaj-art-286ee0bbd60a4695af7bc6d25f613f62 |
| institution | Kabale University |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-286ee0bbd60a4695af7bc6d25f613f622025-08-20T03:43:58ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01170314510.3847/1538-3881/adeb53An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m TelescopeCheng Cheng0https://orcid.org/0000-0003-0202-0534Jia-Sheng Huang1https://orcid.org/0000-0001-6511-8745Peng Wei2https://orcid.org/0000-0002-5674-4223Ali Esamdin3https://orcid.org/0000-0003-1845-4900Guojie Feng4https://orcid.org/0000-0002-4788-8188Zhi-Xiang Zhang5https://orcid.org/0000-0002-2419-6875Haojing Yan6https://orcid.org/0000-0001-7592-7714Wei Du7https://orcid.org/0000-0003-4546-8216Pei Zuo8Zijian Li9https://orcid.org/0000-0001-7634-1547Gustavo Orellana-González10https://orcid.org/0000-0002-6642-7483Letian Wang11Yong Wang12Abdusamatjan Iskandar13https://orcid.org/0009-0003-9229-9942Shahidin Yaqup14https://orcid.org/0000-0001-8677-2391Chinese Academy of Sciences South America Center for Astronomy , National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China ; chengcheng@nao.cas.cn; CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of ChinaChinese Academy of Sciences South America Center for Astronomy , National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China ; chengcheng@nao.cas.cn; CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China; Harvard-Smithsonian Center for Astrophysics , 60 Garden Street, Cambridge, MA 02138, USAXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cnXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cn; University of Chinese Academy of Sciences , No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, People’s Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cn; University of Chinese Academy of Sciences , No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, People’s Republic of ChinaCollege of Physics and Information Engineering, Quanzhou Normal University , Quanzhou, Fujian 362000, People’s Republic of China ; zzx@qztc.edu.cnDepartment of Physics and Astronomy, University of Missouri , Columbia, MO 65211, USACAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China; National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of ChinaNational Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of ChinaChinese Academy of Sciences South America Center for Astronomy , National Astronomical Observatories, CAS, Beijing 100101, People’s Republic of China ; chengcheng@nao.cas.cn; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of ChinaFundación Chilena de Astronomía , código postal 7500011, Santiago, ChileXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cnXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cnXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cn; University of Chinese Academy of Sciences , No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, People’s Republic of ChinaXinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang 830011, People’s Republic of China ; weipeng@xao.ac.cn, aliyi@xao.ac.cnWe present first-light deep H α imaging taken with the Nanshan 1 m wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy Survey. The H α image shows ongoing star formation not only inside the galaxy but also in an H I cloud in the eastern H I tail, which is roughly 16 kpc away from the main galaxy. The HST images reveal several ultrablue compact objects (F555W − F814W < −0.5 mag, FWHM ∼ 0 $\mathop{.}\limits^{\unicode{x02033}}$ 2) in the H α bright region, aligned with the H I tail, suggesting the presence of young open cluster candidate in the H I tail. Our results suggest that wide field H α imaging is a valuable tool for investigating recent star formation in the extended regions of NGC 4258. Furthermore, the star formation in diffuse H I tails could highlight an potential aspect of galaxy stellar halo formation, warranting further investigation of the impact of star formation in halos on galaxy evolution.https://doi.org/10.3847/1538-3881/adeb53Narrow band photometry |
| spellingShingle | Cheng Cheng Jia-Sheng Huang Peng Wei Ali Esamdin Guojie Feng Zhi-Xiang Zhang Haojing Yan Wei Du Pei Zuo Zijian Li Gustavo Orellana-González Letian Wang Yong Wang Abdusamatjan Iskandar Shahidin Yaqup An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope The Astronomical Journal Narrow band photometry |
| title | An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope |
| title_full | An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope |
| title_fullStr | An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope |
| title_full_unstemmed | An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope |
| title_short | An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope |
| title_sort | hα cloud in the h i tail recent star formation in the outskirts of ngc 4258 revealed by nanshan 1 m telescope |
| topic | Narrow band photometry |
| url | https://doi.org/10.3847/1538-3881/adeb53 |
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