NuSTAR OBSERVATIONS OF WISE J1036+0449, A GALAXY AT z similar to 1 OBSCURED BY HOT DUST

	NuSTAR OBSERVATIONS OF WISE J1036+0449, A GALAXY AT z similar to 1 OBSCURED BY HOT DUST
	Ricci, C.1,2,3; Assef, R. J.4; Stern, D.5; Nikutta, R.1,6; Alexander, D. M.7; Asmus, D.8; Ballantyne, D. R.9; Bauer, F. E.1,2,10,11; Blain, A. W.12; Boggs, S.13
刊名	ASTROPHYSICAL JOURNAL
	2017-01-20
卷号	835 期号:1
关键词	infrared: galaxies galaxies: active galaxies: evolution galaxies: high-redshift quasars: general quasars: individual (WISE J1036+0449)
英文摘要	Hot dust-obscured galaxies (hot DOGs), selected from Wide-Field Infrared Survey Explorer's all-sky infrared survey, host some of the most powerful active galactic nuclei known and may represent an important stage in the evolution of galaxies. Most known hot DOGs are located at z > 1.5, due in part to a strong bias against identifying them at lower redshift related to the selection criteria. We present a new selection method that identifies 153 hot DOG candidates at z similar to 1, where they are significantly brighter and easier to study. We validate this approach by measuring a redshift z = 1.009 and finding a spectral energy distribution similar to that of higher-redshift hot DOGs for one of these objects, WISE J1036+ 0449 (L-Bol similar or equal to 8 x 10(46) erg s(-1)). We find evidence of a broadened component in Mg II, which would imply a black hole mass of M-BH similar or equal to 2 x 10(8) M-circle dot and an Eddington ratio of lambda(Edd) similar or equal to 2.7. WISE J1036+ 0449 is the first hot DOG detected by the Nuclear Spectroscopic Telescope Array, and observations show that the source is heavily obscured, with a column density of N-II similar or equal to (2-15) x 10(23)cm(-2). The source has an intrinsic 2-10 keV luminosity of similar to 6 x 10(44)erg s(-1), a value significantly lower than that expected from the mid-infrared/X-ray correlation. We also find that other hot DOGs observed by X-ray facilities show a similar deficiency of X-ray flux. We discuss the origin of the X-ray weakness and the absorption properties of hot DOGs. Hot DOGs at z <= 1 could be excellent laboratories to probe the characteristics of the accretion flow and of the X-ray emitting plasma at extreme values of the Eddington ratio.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLES ; ULTRALUMINOUS INFRARED GALAXIES ; X-RAY-EMISSION ; SPECTRAL ENERGY-DISTRIBUTIONS ; DIGITAL SKY SURVEY ; SEYFERT-GALAXIES ; XMM-NEWTON ; HOST GALAXIES ; HIGH-REDSHIFT
收录类别	SCI
语种	英语
WOS记录号	WOS:000393455400105
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8275]
专题	国家天文台_射电天文研究部
作者单位	1.Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Casilla 306, Santiago 22, Chile 2.EMBIGGEN Anillo, Concepcion, Chile 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 4.Univ Diego Portales, Fac Ingn, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Chile 5.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA 6.Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA 7.Univ Durham, Ctr Extragalact Astron, South Rd, Durham DH1 3LE, England 8.European So Observ, Casilla 19001, Santiago 19, Chile 9.Georgia Inst Technol, Sch Phys, Ctr Relativist Astrophys, 837 State St, Atlanta, GA 30332 USA 10.Space Sci Inst, 4750 Walnut St,Suite 205, Boulder, CO 80301 USA
推荐引用方式 GB/T 7714	Ricci, C.,Assef, R. J.,Stern, D.,et al. NuSTAR OBSERVATIONS OF WISE J1036+0449, A GALAXY AT z similar to 1 OBSCURED BY HOT DUST[J]. ASTROPHYSICAL JOURNAL,2017,835(1).
APA	Ricci, C..,Assef, R. J..,Stern, D..,Nikutta, R..,Alexander, D. M..,...&Zhang, W. W..(2017).NuSTAR OBSERVATIONS OF WISE J1036+0449, A GALAXY AT z similar to 1 OBSCURED BY HOT DUST.ASTROPHYSICAL JOURNAL,835(1).
MLA	Ricci, C.,et al."NuSTAR OBSERVATIONS OF WISE J1036+0449, A GALAXY AT z similar to 1 OBSCURED BY HOT DUST".ASTROPHYSICAL JOURNAL 835.1(2017).