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Persistent URL	http://purl.org/net/epubs/work/10918851
Record Status	Checked
Record Id	10918851
Title	AEGIS: Infrared spectroscopy of an infrared-luminous lyman break galaxy at z = 3.01
Contributors	J Huang, M Ashby, S Willner, P Barmby, B McLeod, H Smith, G Fazio, D Rigopoulou (STFC Rutherford Appleton Lab.), C Papovich, E Le Floc'h, E Egami, C Willmer, R Ivison, E Laird, T Webb, G Wilson, S Chapman, C Conselice, C Shu
Abstract	We report the detection of rest-frame 6.2 and 7.7 ?m emission features arising from polycyclic aromatic hydrocarbons (PAHs) in the Spitzer IRS spectrum of an infrared-luminous Lyman break galaxy at z = 3.01. This is currently the highest redshift galaxy where these PAH emission features have been detected. The total IR luminosity inferred from the MIPS 24 ?m and radio flux density is 2 × 10 L , 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 ?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. © 2007. The American Astronomical Society. All rights reserved.
Organisation	CCLRC , SSTD , SSTD-SP
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Astrophys J Lett 660 (2007).	doi:10.1086/508567		2007