Evolution and star formation history of NGC 300 from a chemical evolution model with radial gas inflows
文献类型：期刊论文
| 作者 | Kang XY(康晓宇)1,2,3; Kudritzki, Rolf-Peter4,5; Gong, Xiaobo6; Zhang FH(张奉辉)1,2,3 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-08-26 |
| 卷号 | 701 |
| 关键词 | galaxies: abundances galaxies: evolution galaxies: individual: NGC 300 galaxies: spiral |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202554108 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Context. The cosmic time evolution of the radial structure is one of the key topics in the investigation of disc galaxies. In the build-up of galactic discs, gas infall is an important ingredient and it produces radial gas inflows as a physical consequence of angular momentum conservation since the infalling gas onto the disc at a specific radius has lower angular momentum than the circular motions of the gas at the point of impact. NGC 300 is a well-studied isolated, bulgeless, and low-mass disc galaxy ideally suited for an investigation of galaxy evolution with radial gas inflows. Aims. Our aim is to investigate the effects of radial gas inflows on the physical properties of NGC 300, for example the radial profiles of HI gas mass and star formation rate (SFR) surface densities, specific star formation rate (sSFR), and metallicity, and to study how the metallicity gradient evolves with cosmic time. Methods. A chemical evolution model for NGC 300 was constructed by assuming its disc builds up progressively by the infalling of metal-poor gas and the outflowing of metal-enriched gas. Radial gas inflows were also considered in the model. We used the model to build a bridge between the available data (e.g. gas content, SFR, and chemical abundances) observed today and the galactic key physical processes. Results. Our model including the radial gas inflows and an inside-out disc formation scenario can simultaneously reproduce the present-day observed radial profiles of HI gas mass surface density, SFR surface density, sSFR, gas-phase, and stellar metallicity. We find that, although the value of radial gas inflow velocity is as low as -0.1 km s(-1), the radial gas inflows steepen the present-day radial profiles of HI gas mass surface density, SFR surface density, and metallicity, but flatten the radial sSFR profile. Incorporating radial gas inflows significantly improves the agreement between our model predicted present-day sSFR profile and the observations of NGC 300. Our model predictions are also in good agreement with the star-forming galaxy main sequence and the mass-metallicity relation of star-forming galaxies. It predicts a significant flattening of the metallicity gradient with cosmic time. We also find that the model predicted star formation has been more active recently, indicating that the radial gas inflows may help to sustain star formation in local spirals, at least in NGC 300. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | MASS-METALLICITY RELATION ; GRAVITY-LUMINOSITY RELATIONSHIP ; COSMIC ABUNDANCE PROBES ; INSIDE-OUT GROWTH ; H-II REGIONS ; FORMING GALAXIES ; SPIRAL GALAXIES ; ISM METALLICITY ; RED SUPERGIANTS ; NEARBY GALAXIES |
| 资助项目 | Basic Science Centre project of the National Natural Science Foundation (NSF) of China[12288102]; National Key R&D Program of China[2021YFA1600403]; National Key R&D Program of China[2021YFA1600400]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Basic research program of Yunnan Province[202401AT070142]; Munich Excellence Cluster Origins and the Munich Instititute for Astro-, Particle and Biophysics (MIAPbP) - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under the German Excellence Strategy[EXC-2094 390783311] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001559514600002 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Basic Science Centre project of the National Natural Science Foundation (NSF) of China[12288102] ; National Key R&D Program of China[2021YFA1600403, 2021YFA1600400] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Basic research program of Yunnan Province[202401AT070142] ; Munich Excellence Cluster Origins and the Munich Instititute for Astro-, Particle and Biophysics (MIAPbP) - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under the German Excellence Strategy[EXC-2094 390783311] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28534]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 通讯作者 | Kang XY(康晓宇) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, PR China; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, PR China; 3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, PR China; 4.University Observatory Munich, Ludwig-Maximilian-Universität München, Scheinerstr. 1, 81679 Munich, Germany; 5.Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu HI96822, USA; 6.School of Opto-electronic Engineering, Zaozhuang University, Zaozhuang 277160, PR China |
| 推荐引用方式 GB/T 7714 | Kang XY,Kudritzki, Rolf-Peter,Gong, Xiaobo,et al. Evolution and star formation history of NGC 300 from a chemical evolution model with radial gas inflows[J]. ASTRONOMY & ASTROPHYSICS,2025,701. |
| APA | 康晓宇,Kudritzki, Rolf-Peter,Gong, Xiaobo,&张奉辉.(2025).Evolution and star formation history of NGC 300 from a chemical evolution model with radial gas inflows.ASTRONOMY & ASTROPHYSICS,701. |
| MLA | 康晓宇,et al."Evolution and star formation history of NGC 300 from a chemical evolution model with radial gas inflows".ASTRONOMY & ASTROPHYSICS 701(2025). |
入库方式： OAI收割
来源：云南天文台
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