The clustering amplitude of X-ray-selected AGN at z similar to 0.8: evidence for a negative dependence on accretion luminosity

	The clustering amplitude of X-ray-selected AGN at z similar to 0.8: evidence for a negative dependence on accretion luminosity
	Mountrichas, G.1; Georgakakis, A.1,2; Menzel, M. -L.2; Fanidakis, N.3; Merloni, A.2; Liu, Z.2,4 ; Salvato, M.2; Nandra, K.2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-04-21
卷号	457 期号:4 页码:4195-4204
关键词	black hole physics galaxies: active galaxies: haloes quasars: general galaxies: Seyfert
英文摘要	The northern tile of the wide-area and shallow XMM-XXL X-ray survey field is used to estimate the average dark matter halomass of relatively luminous X-ray-selected active galactic nucleus (AGN) [log L-X(2-10 keV) = 43.6(-0.4)(+0.4) erg s(-1)] in the redshift interval z = 0.5-1.2. Spectroscopic follow-up observations of X-ray sources in the XMM-XXL field by the Sloan telescope are combined with the VIMOS Public Extragalactic Redshift Survey spectroscopic galaxy survey to determine the cross-correlation signal between X-ray-selected AGN (total of 318) and galaxies (about 20 000). We model the large scales (2-25 Mpc) of the correlation function to infer a mean dark matter halo mass of logM/(M-circle dot h(-1)) = 12.50(-0.30)(+0.22) for the X-ray-selected AGN sample. This measurement is about 0.5 dex lower compared to estimates in the literature of the mean dark matter halo masses of moderate-luminosity X-ray AGN [L-X(2-10 keV) approximate to 10(42) -10(43) erg s(-1)] at similar redshifts. Our analysis also links the mean clustering properties of moderate-luminosity AGN with those of powerful ultraviolet/optically selected QSOs, which are typically found in haloes with masses few times 10(12)M(circle dot). There is therefore evidence for a negative luminosity dependence of the AGN clustering. This is consistent with suggestions that AGN have a broad dark matter halo mass distribution with a high mass tail that becomes subdominant at high accretion luminosities. We further show that our results are in qualitative agreement with semi-analytic models of galaxy and AGN evolution, which attribute the wide range of dark matter halo masses among the AGN population to different triggering mechanisms and/or black hole fuelling modes.
收录类别	SCI
语种	英语
WOS记录号	WOS:000373586000058
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5355]
专题	国家天文台_空间科学研究部
作者单位	1.Natl Observ Athens, Athens 11532, Greece 2.Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany 3.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Mountrichas, G.,Georgakakis, A.,Menzel, M. -L.,et al. The clustering amplitude of X-ray-selected AGN at z similar to 0.8: evidence for a negative dependence on accretion luminosity[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,457(4):4195-4204.
APA	Mountrichas, G..,Georgakakis, A..,Menzel, M. -L..,Fanidakis, N..,Merloni, A..,...&Nandra, K..(2016).The clustering amplitude of X-ray-selected AGN at z similar to 0.8: evidence for a negative dependence on accretion luminosity.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,457(4),4195-4204.
MLA	Mountrichas, G.,et al."The clustering amplitude of X-ray-selected AGN at z similar to 0.8: evidence for a negative dependence on accretion luminosity".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 457.4(2016):4195-4204.