Effects of metallicity and AGN activity on the mid-infrared dust emission of galaxies
文献类型：期刊论文
| 作者 | Wu, Hong ; Zhu, Yi-Nan; Cao, Chen; Qin, Bo
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2007-10-10 |
| 卷号 | 668期号:1页码:87-93 |
| 关键词 | galaxies : abundances galaxies : active galaxies : starburst infrared : galaxies |
| 英文摘要 | Using a sample of the Spitzer SWIRE-field galaxies whose optical spectra are taken fromData Release 4 of the Sloan Digital Sky Survey, we study possible correlations between the mid-infrared (MIR) dust emission from these galaxies and both their metallicities and AGN activities. We find that both metallicity and AGN activity are well correlated with the following ratios: PAH-to-star, VSG-to-star, and PAH-to-VSG, which can be characterized by nu L-nu [8 mu m(dust)]/nu L-nu [3.6 mu m], nu L-nu[24 mu m]/nu L-nu [3.6 mu m], and nu L-nu [8 mu m(dust)]/nu L-nu [24 mu m], respectively. We argue that our MIR-metallicity correlation could be explained by either the amount of dust (ongoing dust formation) or dust destruction (PAHs and VSGs could be destroyed by hard and intense radiation fields), and that the MIR-AGN correlation could arise due to either PAH destruction or an enhanced VSG continuum by the central AGN. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000250010600008 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7283]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hong,Zhu, Yi-Nan,Cao, Chen,et al. Effects of metallicity and AGN activity on the mid-infrared dust emission of galaxies[J]. ASTROPHYSICAL JOURNAL,2007,668(1):87-93. |
| APA | Wu, Hong,Zhu, Yi-Nan,Cao, Chen,&Qin, Bo.(2007).Effects of metallicity and AGN activity on the mid-infrared dust emission of galaxies.ASTROPHYSICAL JOURNAL,668(1),87-93. |
| MLA | Wu, Hong,et al."Effects of metallicity and AGN activity on the mid-infrared dust emission of galaxies".ASTROPHYSICAL JOURNAL 668.1(2007):87-93. |
入库方式： OAI收割
来源：国家天文台
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