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Rest-frame mid-infrared detection of an extremely luminous lyman break galaxy with the Spitzer Infrared Spectrograph (IRS)

Rest-frame mid-infrared detection of an extremely luminous lyman break galaxy with the Spitzer Infrared Spectrograph (IRS)

Teplitz, H. I.; Charmandaris, V.; Armus, L.; Appleton, P. N.; Houck, J. R.; Soifer, B. T.; Weedman, D.; Brandl, B. R.; van Cleve, J.; Grillmair, C.; Uchid, K. I.
URI: http://hdl.handle.net/2014/40878
Date: 2004-09
Keywords: cosmology; galaxies; high redshift
Publisher: American Astronomical Society
Citation: The Astrophysical Journal Supplement Series, 154:103–106, 2004 September doi.org/10.1086/423134

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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