Rest-Frame Mid-Infrared Detection of an Extremely Luminous Lyman Break Galaxy with the Spitzer Infrared Spectrograph (IRS)* **

H. I. Teplitz; V. Charmandaris; L. Armus; P. N. Appleton; J. R. Houck; B. T. Soifer; D. Weedman; B. R. Brandl; J. van Cleve; C. Grillmair; K. I. Uchida

doi:10.1086/422315

The Astrophysical Journal Supplement Series

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Rest-Frame Mid-Infrared Detection of an Extremely Luminous Lyman Break Galaxy with the Spitzer Infrared Spectrograph (IRS)^* ^**

H. I. Teplitz¹, V. Charmandaris^2,3, L. Armus¹, P. N. Appleton¹, J. R. Houck², B. T. Soifer¹, D. Weedman², B. R. Brandl⁴, J. van Cleve⁵, C. Grillmair¹, and K. I. Uchida²

© 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A.
The Astrophysical Journal Supplement Series, Volume 154, Number 1 Citation H. I. Teplitz et al 2004 ApJS 154 103 DOI 10.1086/422315

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Author affiliations

¹ Spitzer Science Center, MC 220-6, California Institute of Technology, Pasadena, CA 91125

² Astronomy Department, Cornell University, Ithaca, NY 14853

³ Chercheur Associé, Observatoire de Paris, F-75014 Paris, France

⁴ Leiden University, 2300 RA Leiden, Netherlands

⁵ Ball Aerospace and Technologies Corporation, 1600 Commerce Street, Boulder, CO 80301

Dates

Received 2004 March 26
Accepted 2004 April 26

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Abstract

We present the first rest-frame ∼4 μm detection of a Lyman break galaxy. The data were obtained using the 16 μm 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 (SDSS) spectra (as reported by Bentz et al.). 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 mid-infrared source. We find no evidence of a strong lens among the mid-infrared sources.

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Footnotes

*
Based on observations obtained with the Spitzer Space Telescope, which is operated by JPL, California Institute of Technology, for the National Aeronautics and Space Administration.
**
The IRS is a collaborative venture between Cornell University and Ball Aerospace Corporation that was funded by NASA through JPL.

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