ON THE EVOLUTION OF THE CORES OF RADIO SOURCES AND THEIR EXTENDED RADIO EMISSION

doi:10.1088/0004-637X/744/2/84

YNAO OpenIR > 高能天体物理研究组

	ON THE EVOLUTION OF THE CORES OF RADIO SOURCES AND THEIR EXTENDED RADIO EMISSION
	Yuan ZL(袁尊理)1,2,3 ; Wang JC(王建成)1,2 ; Yuan, ZL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2012-01-10
卷号	744 期号:2
DOI	10.1088/0004-637X/744/2/84
产权排序	第1完成单位
收录类别	SCI
关键词	Galaxies: Active Radio Continuum: Galaxies Galaxies: Luminosity Function Mass Function
摘要	The work in this paper aims at determining the evolution and possible co-evolution of radio-loud active galactic nuclei (AGNs) and their cores via their radio luminosity functions (i.e., total and core RLFs, respectively). Using a large combined sample of 1063 radio-loud AGNs selected at low radio frequency, we investigate the RLF at 408 MHz of steep-spectrum radio sources. Our results support a luminosity-dependent evolution. Using core flux density data of the complete sample 3CRR, we investigate the core RLF at 5.0 GHz. Based on the combined sample with incomplete core flux data, we also estimate the core RLF using a modified factor of completeness. Both results are consistent and show that the comoving number density of radio cores displays a persistent decline with redshift, implying a negative density evolution. We find that the core RLF is obviously different from the total RLF at the 408 MHz band which is mainly contributed by extended lobes, implying that the cores and extended lobes could not be co-evolving at radio emission.
项目资助者	National Natural Science Foundation of China [10778702] ; National Basic Research Program of China (973 Program) [2009CB824800] ; Chinese Academy of Sciences [KJCX2-YW-T24] ; National Aeronautics and Space Administration
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
归档日期	2011-12-19
WOS记录号	WOS:000298666400004
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; MOLONGLO REFERENCE CATALOG ; FLAT-SPECTRUM SAMPLE ; HIGH-RESOLUTION OBSERVATIONS ; GALAXY LUMINOSITY FUNCTION ; COMPLETE QUASAR SAMPLE ; JET-DISK SYMBIOSIS ; X-RAY BINARIES ; LESS-THAN 1.0 ; HIGH-REDSHIFT
引用统计	被引频次：21[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/114a53/5026
专题	高能天体物理研究组中国科学院天体结构与演化重点实验室
通讯作者	Yuan, ZL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.Graduate School, Chinese Academy of Sciences, Beijing, 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	Yuan ZL,Wang JC,Yuan, ZL . ON THE EVOLUTION OF THE CORES OF RADIO SOURCES AND THEIR EXTENDED RADIO EMISSION[J]. ASTROPHYSICAL JOURNAL,2012,744(2).
APA	Yuan ZL,Wang JC,&Yuan, ZL .(2012).ON THE EVOLUTION OF THE CORES OF RADIO SOURCES AND THEIR EXTENDED RADIO EMISSION.ASTROPHYSICAL JOURNAL,744(2).
MLA	Yuan ZL,et al."ON THE EVOLUTION OF THE CORES OF RADIO SOURCES AND THEIR EXTENDED RADIO EMISSION".ASTROPHYSICAL JOURNAL 744.2(2012).

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