中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
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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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