Rest-Frame MIR Detection of an Extremely Luminous Lyman Break Galaxy with the Spitzer IRS

(2) Cornell; 3); (3) Chercheur Associ\'e; (4) Leiden University; (5) Ball Aerospace); B.R. Brandl (4); B.T. Soifer (1); C. Grillmair (1); D. Weedman (2); H. I. Teplitz (1)

arxiv: astro-ph/0406185 · v1 · submitted 2004-06-07 · 🌌 astro-ph

Rest-Frame MIR Detection of an Extremely Luminous Lyman Break Galaxy with the Spitzer IRS

H. I. Teplitz (1) , V. Charmandaris (2 , 3) , L. Armus (1) , P.N. Appleton (1) , J.R. Houck (2) , B.T. Soifer (1) , D. Weedman (2)

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B.R. Brandl (4) J. van Cleve (5) C. Grillmair (1) K.I. Uchida (2); ((1) Spitzer Science Center (2) Cornell (3) Chercheur Associ\'e Observatoire de Paris (4) Leiden University (5) Ball Aerospace)

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keywords galaxyspitzerbreaklymandatadetectionextremelyfirst

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We present the first rest-frame ~4 micron detection of a Lyman break galaxy. The data were obtained using the 16 micron imaging capability of the Spitzer Infrared Spectrograph. The target object, J134026.44+634433.2, is an extremely luminous Lyman break galaxy at z=2.79 first identified in Sloan Digital Sky Survey spectra (Bentz, Osmer, & Weinberg 2004). The source is strongly detected with a flux of 0.94 +/- 0.02 mJy. Combining Spitzer and SDSS photometry with supporting ground-based J- and K-band data, we show that the spectral energy distribution is consistent with an actively star-forming galaxy. We also detect other objects in the Spitzer field of view, including a very red MIR source. We find no evidence of a strong lens amongst the MIR sources.

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Rest-Frame MIR Detection of an Extremely Luminous Lyman Break Galaxy with the Spitzer IRS

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