METAL-ENRICHED OUTFLOWS IN THE ULTRALUMINOUS INFRARED QUASAR Q1321+058

	METAL-ENRICHED OUTFLOWS IN THE ULTRALUMINOUS INFRARED QUASAR Q1321+058
	Wang, TG 1,4; Zhou, HY 1,2; Yuan WM(袁为民)3 ; Lu, HL 1; Dong, XB1,4 ; Dan HG(单红光)3,4
刊名	ASTROPHYSICAL JOURNAL
	2009-09-10
卷号	702 期号:2 页码:851-861
关键词	galaxies: nuclei galaxies: starburst quasars: emission lines
ISSN号	0004-637X
通讯作者	Wang, TG (reprint author), Univ Sci & Technol China, Chinese Acad Sci, Key Lab Res Galaxies & Cosmol, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China.
产权排序	第三完成单位
英文摘要	Quasar outflows may play important role in the evolution of its host galaxy and central black hole, and are most often studied in absorption lines. In this paper, we present a detailed study of multiple outflows in the obscured ultraluminous infrared quasar Q1321+058. The outflows reveal themselves in the complex optical and ultraviolet (UV) emission-line spectrum, with a broad component blueshifted by 1650 km s(-1) and a narrow component by 360 km s(-1), respectively. The higher velocity component shows ever strong N III] (N III]/C III] = 3.8 +/- 0.3 and N III]/C IV = 0.53) and strong Si III] (Si III]/C III] similar or equal to 1), in addition to strong [O III]lambda 5007 and [Ne III]lambda 3869 emission. A comparison of these line ratios with photoionization models suggests an overabundance of N and Si relative to C. The abundance pattern is consistent with a fast chemical enriching process associated with a recent starburst, triggered by a recent galaxy merger. The outflow extends to several tens to hundred parsecs from the quasar, and covers only a very small sky. We find that the outflow with line emitting gas is energetically insufficient to remove the interstellar medium of the host galaxy, but total kinetic energy may be much larger than suggested by the emission lines. The velocity range and the column density suggest that the outflow might be part of the low-ionization broad absorption line region as seen in a small class of quasars. The optical and UV continuum is starlight dominated and can be modeled with a young-aged (1 Myr) plus an intermediate-aged (similar to 0.5-1 Gyr) stellar populations, suggesting a fast building of the stellar mass in the host galaxy, consistent with the starburst-type metal abundances inferred from the high-velocity outflow spectrum. The broadband spectral energy distribution shows that it is an obscured quasar with its bulk emission in the middle infrared. The star formation rate, independently estimated from UV, far-infrared, and emission-line luminosity, is much lower than that is required for the co-evolution of the black hole and its host spheroid.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	NARROW-LINE REGION ; ACTIVE GALACTIC NUCLEI ; SPECTRAL ENERGY-DISTRIBUTIONS ; BROAD ABSORPTION-LINE ; STAR-FORMING GALAXIES ; DIGITAL SKY SURVEY ; HOST GALAXIES ; EMISSION-LINE ; STELLAR OBJECTS ; MIDINFRARED SPECTROSCOPY
收录类别	SCI
原文出处	http://iopscience.iop.org/0004-637X/702/2/851/
语种	英语
WOS记录号	WOS:000269245000004
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4977]
专题	云南天文台_高能天体物理研究组
作者单位	1.Key Laboratory for Research in Galaxies and Cosmology, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui, 230026, China 2.Department of Astronomy, University of Florida, Gainesville, FL 32611, USA 3.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China 4.Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui, 230026, China
推荐引用方式 GB/T 7714	Wang, TG,Zhou, HY,Yuan WM,et al. METAL-ENRICHED OUTFLOWS IN THE ULTRALUMINOUS INFRARED QUASAR Q1321+058[J]. ASTROPHYSICAL JOURNAL,2009,702(2):851-861.
APA	Wang, TG,Zhou, HY,Yuan WM,Lu, HL,Dong, XB,&Dan HG.(2009).METAL-ENRICHED OUTFLOWS IN THE ULTRALUMINOUS INFRARED QUASAR Q1321+058.ASTROPHYSICAL JOURNAL,702(2),851-861.
MLA	Wang, TG,et al."METAL-ENRICHED OUTFLOWS IN THE ULTRALUMINOUS INFRARED QUASAR Q1321+058".ASTROPHYSICAL JOURNAL 702.2(2009):851-861.