Metal abundances in the MACER simulations of the hot interstellar medium
文献类型：期刊论文
| 作者 | Pellegrini, Silvia1; Gan, Zhaoming2,3; Ostriker, Jeremiah P.3; Ciotti, Luca1 |
| 刊名 | ASTRONOMISCHE NACHRICHTEN
 |
| 出版日期 | 2020-02-25 |
| 页码 | 7 |
| ISSN号 | 0004-6337 |
| 关键词 | galaxies active - galaxies ISM - ISM abundances - ISM evolution X-rays ISM |
| DOI | 10.1002/asna.202023776 |
| 英文摘要 | Hot plasma is the dominant phase of the interstellar medium of early-type galaxies. It can originate from stellar mass losses, residual gas from the formation epoch, and accretion from outside the galaxies. Its evolution is linked to the dynamical structure of the host galaxy, to the supernova and active galactic nuclei (AGN) feedback, and to (late-epoch) star formation in a way that has yet to be fully understood. Important clues about the origin and evolution of the hot gas come from the abundances of heavy metals that have been studied with increasing detail through XMM-Newton and Chandra. We present recent high-resolution hydrodynamical simulations of the hot gas evolution that include the above processes, where several chemical species, originating in asymptotic giant branch stars and supernovae of types Ia and II, have also been considered. The high resolution, of few parsecs in the central galactic region, allows us to track the metal enrichment, transportation, and dilution throughout the galaxy. The comparison of model results with observed abundances demonstrates good agreement for the region enriched by the AGN wind but also shows discrepancies for the diffuse hot gas; the latter indicates the need for a revision of standard assumptions and/or the importance of neglected effects due to the dust and/or residual uncertainties in deriving abundances from the X-ray spectra. |
| WOS关键词 | EARLY-TYPE GALAXIES ; ENRICHMENT ; ISM ; NUCLEOSYNTHESIS ; GAS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| WOS记录号 | WOS:000515565100001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54458]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Pellegrini, Silvia |
| 作者单位 | 1.Univ Bologna, Dept Phys & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China 3.Columbia Univ, Dept Astron, New York, NY 10027 USA |
| 推荐引用方式 GB/T 7714 | Pellegrini, Silvia,Gan, Zhaoming,Ostriker, Jeremiah P.,et al. Metal abundances in the MACER simulations of the hot interstellar medium[J]. ASTRONOMISCHE NACHRICHTEN,2020:7. |
| APA | Pellegrini, Silvia,Gan, Zhaoming,Ostriker, Jeremiah P.,&Ciotti, Luca.(2020).Metal abundances in the MACER simulations of the hot interstellar medium.ASTRONOMISCHE NACHRICHTEN,7. |
| MLA | Pellegrini, Silvia,et al."Metal abundances in the MACER simulations of the hot interstellar medium".ASTRONOMISCHE NACHRICHTEN (2020):7. |
入库方式： OAI收割
来源：国家天文台
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