Infrared photometric study of type II quasars

doi:10.1111/j.1365-2966.2008.14222.x

YNAO OpenIR > 其他

	Infrared photometric study of type II quasars
	Chen PS(陈培生); Dan HG(单红光); Chen, PS (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2009-03-11
卷号	393 期号:4 页码:1408-1422
DOI	10.1111/j.1365-2966.2008.14222.x
产权排序	第1完成单位
收录类别	SCI
关键词	Galaxies: Photometry Quasars: General Infrared: Galaxies
摘要	For this paper, we collected almost all of the type II quasars so far discovered. Among them, 485 sources have photometric data at JHK bands, mainly from Two-Micron All-Sky Survey observations, 65 sources have IRAS photometric data in at least one of the three IRAS bands at 25, 60 and 100 mu m and 15 sources have IRAS photometric data in all three IRAS bands. We find that in nearly half of all type II quasars, both the near-and far-infrared radiations are dominated by starlight or thermal reprocessing of starlight by dust in the underlying galaxy. The infrared radiation of the other group (slightly over half) is dominated by a non-thermal radiation in the near-infrared, and mostly in the far-infrared also (although there is a mixture particularly for the longer wavelengths). It is proposed that for the later group, hidden broad lines may exist in the infrared. On the basis of our and previous results, we also discuss the possibility that there are two distinct classes of type II quasars: 'true' type II quasars without a broad-line region and heavily obscured type I quasars, in full analogy with the case for type II Seyfert galaxies. No relationships can be found for either the near-infrared or the far-infrared colours and the redshift. Correlations between absolute magnitude in the near-and far-infrared with redshift are found, but could be due to a flux limit (Malmquist bias).
项目资助者	NNSFC [10503011, 10533050] ; Chinese Academy of Sciences
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0035-8711
URL	查看原文
归档日期	2009-03-02
WOS记录号	WOS:000263758400024
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	DIGITAL-SKY-SURVEY ; ACTIVE GALACTIC NUCLEI ; BRIGHT IRAS GALAXIES ; BROAD-LINE REGIONS ; X-RAY SOURCES ; SEYFERT-2 GALAXIES ; CLOSE ENVIRONMENT ; 25-MU-M EMISSION ; SPACE-TELESCOPE ; STAR FORMATION
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4232
专题	其他
通讯作者	Chen, PS (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Chen PS,Dan HG,Chen, PS . Infrared photometric study of type II quasars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2009,393(4):1408-1422.
APA	Chen PS,Dan HG,&Chen, PS .(2009).Infrared photometric study of type II quasars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,393(4),1408-1422.
MLA	Chen PS,et al."Infrared photometric study of type II quasars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 393.4(2009):1408-1422.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Infrared photometric（706KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文