AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z=3.01

	AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z=3.01
	Huang, J.-S.; Rigopoulou, D.; Papovich, C.; Ashby, M. L. N.; Willner, S. P.; Ivison, R.; Laird, E. S.; Webb, T.; Wilson, G.; Barmby, P.
刊名	ASTROPHYSICAL JOURNAL
	2007-05-01
卷号	660 期号:1 页码:L69-L72
关键词	cosmology : observations galaxies : high-redshift galaxies : starburst infrared : galaxies
英文摘要	We report the detection of rest-frame 6.2 and 7.7 mu m emission features arising from polycyclic aromatic hydrocarbons (PAHs) in the Spitzer IRS spectrum of an infrared-luminous Lyman break galaxy at. This z = 3.01 is currently the highest redshift galaxy where these PAH emission features have been detected. The total IR luminosity inferred from the MIPS 24 mu m and radio flux density is 2 x 10(13) L-circle dot, which qualifies this object as a so-called hyperluminous infrared galaxy (HyLIRG). However, unlike local HyLIRGs, which are generally associated with QSO/AGNs and have weak or absent PAH emission features, this HyLIRG has very strong 6.2 and 7.7 mu m PAH emission. We argue that intense star formation dominates the IR emission of this source, although we cannot rule out the presence of a deeply obscured AGN. This LBG appears to be a distorted system in the HST ACS F606W and F814W images, possibly indicating that a significant merger or interaction is driving the large IR luminosity.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SPITZER-SPACE-TELESCOPE ; STAR-FORMATION ; SUBMILLIMETER GALAXIES ; ANTENNAE GALAXIES ; SCUBA GALAXIES ; REDSHIFT ; SPECTROGRAPH ; POPULATION ; EMISSION ; FEATURES
收录类别	SCI
语种	英语
WOS记录号	WOS:000246112700017
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19499]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA 2.Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England 3.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA 4.Royal Observ Edinburgh, Edinburgh EH9 3HJ, Midlothian, Scotland 5.Univ Calif Santa Cruz, Lick Observ, UCO, Santa Cruz, CA 95064 USA 6.McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada 7.CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA 8.CALTECH, Dept Astron, Pasadena, CA 91125 USA 9.Univ Nottingham, Dept Astron, Nottingham NG7 2RD, England 10.Shanghai Normal Univ, Joint Astrophys Ctr, Shanghai 200234, Peoples R China
推荐引用方式 GB/T 7714	Huang, J.-S.,Rigopoulou, D.,Papovich, C.,et al. AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z=3.01[J]. ASTROPHYSICAL JOURNAL,2007,660(1):L69-L72.
APA	Huang, J.-S..,Rigopoulou, D..,Papovich, C..,Ashby, M. L. N..,Willner, S. P..,...&Fazio, G. G..(2007).AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z=3.01.ASTROPHYSICAL JOURNAL,660(1),L69-L72.
MLA	Huang, J.-S.,et al."AEGIS: Infrared spectroscopy of an infrared-luminous Lyman break galaxy at z=3.01".ASTROPHYSICAL JOURNAL 660.1(2007):L69-L72.